If you just hit account level 50 in Sword x Staff and the Fantomon system opened up, you are probably staring at that Pet Selector Chest wondering which pet to pick. I have been there, and I wasted my first selector on a pet that did nothing for my build. This guide covers the Pet Selector Chest best Fantomons for every class so you do not make the same mistake I did.
Sword x Staff has four main classes: Sorcerer, Sage, Duelist, and Knight. Each one benefits from different Fantomons depending on whether you want raw damage, survivability, or team utility. We spent weeks testing Fantomon pairings across all four classes, running arenas, dungeons, and boss fights to figure out which pets actually make a difference.
In this guide you will learn exactly what Fantomons are, how the Pet Selector Chest works, the full gacha rates, deployment mechanics, a complete tier list, and the best Fantomons for every class in Sword x Staff. I will also cover leveling, resonance, evolution, and the biggest mistakes new players make with the Fantomon system.
Table of Contents
What Are Fantomons in Sword x Staff?
Fantomons are pet companions in Sword x Staff that provide passive stat boosts to your character and can also participate directly in combat. Think of them as a combination of stat sticks and active battle companions. They are not just cosmetic followers roaming behind you on the map.
The Fantomon system unlocks at account level 50 through the giant tree located at your home base. Before that point, you cannot interact with the system at all, which is why many new players feel confused when they suddenly see pet-related UI elements appear. You access the Fantomon hub by interacting with the tree, where you can summon, deploy, level, and evolve your pets.
Each Fantomon belongs to a role category: Offensive (DPS), Guardian (tank), or Support (healer/utility). These roles determine what stats they grant and how they behave when materialized in combat. An Offensive Fantomon will boost your attack stats and deal damage during fights, while a Guardian Fantomon will increase your defense and absorb hits for you.
Understanding these roles is the foundation for picking the right pet from the Pet Selector Chest. If you play a squishy Sorcerer, grabbing a Guardian Fantomon might save your life in PvP, while a Duelist benefits more from an Offensive Fantomon that amplifies burst damage windows.
How to Get the Pet Selector Chest in Sword x Staff
The Pet Selector Chest is a special item in Sword x Staff that lets you choose a specific Fantomon instead of relying on random gacha pulls. This is a big deal because normal summoning is entirely RNG-based, and the Mythic pull rate sits at a brutal 0.8%. With the selector, you skip the gambling and pick exactly what you want.
You receive a Pet Selector Chest as part of the 7-day login reward system. On day 7, you get a selector that lets you choose from a pool of Epic and higher Fantomons. The pool varies but typically includes strong options like Sylvaerie, Terragon, and sometimes limited Legendary picks. The selector does not include every Fantomon in the game, but it covers some of the best ones.
What Makes the Pet Selector Chest Special
Regular summoning uses Summon Crystals at the giant tree, and each pull is subject to gacha rates. You could spend hundreds of crystals and never see a Mythic. The Pet Selector Chest bypasses this by guaranteeing you a specific pet from the available pool.
The mistake I made was picking a pet that looked cool without considering my class. I was running a Sorcerer build and grabbed a Guardian-type Fantomon that added defense stats I did not need. My damage output stayed the same, and I watched other players with properly matched pets clear content faster than me.
Save your Pet Selector Chest until you understand your build direction. If you are still experimenting with classes, hold off. The chest does not expire, so there is no rush to open it immediately.
Fantomon Rarity Tiers and Gacha Rates Explained
Every Fantomon in Sword x Staff belongs to a rarity tier, and the tier determines base stats, skill potency, and overall value. Here are the four rarity tiers from highest to lowest:
- Mythic (SSR) – The rarest and most powerful Fantomons. Base stats are significantly higher than Legendary, and their active skills hit much harder.
- Legendary (SR) – Strong pets with solid stat contributions and useful combat abilities. These are the realistic target for most F2P players.
- Epic (R) – Decent mid-tier pets that serve as good placeholders until you pull something better.
- Rare (N) – Basic pets with low stats. Useful for resonance bonuses and filling deployment slots early on.
Summoning Gacha Rates
When you use Summon Crystals at the giant tree, here are the actual pull rates:
- Mythic (SSR): 0.8% chance per pull
- Legendary (SR): 5% chance per pull
- Epic (R): 30% chance per pull
- Rare (N): 64.2% chance per pull
Those Mythic rates are rough. On average, you need about 125 pulls to statistically land one Mythic Fantomon. That is a lot of Summon Crystals, which is why the Pet Selector Chest and shard synthesis systems are so important for consistent progression.
The pity system does exist but kicks in at 100 pulls, guaranteeing an SSR at that point. If you are F2P, plan your pulls around events and banners that feature the specific Mythic you want.
Fantomon Deployment Mechanics: How Stats Transfer to Your Character
Understanding deployment is where most players lose value. You can deploy up to 4 Fantomons at once, but they do not all contribute equally. Here is exactly how the stat transfer works:
Main Slot (100% stats): Your primary deployed Fantomon. This one grants full stats to your character and will materialize in combat when triggered. Always put your strongest, most synergistic Fantomon here.
Secondary Slots (50% stats each): Three additional slots that each contribute half of the Fantomon’s stats. These pets do not appear in combat but still provide meaningful passive boosts. Fill these with your next best Fantomons that match your build.
Resonance (20% from all owned): Every Fantomon you own but have not deployed contributes 20% of its stats through the resonance system. This means owning more Fantomons is always better, even if they sit on the bench. It also means you should never discard or use low-rarity Fantomons as fodder if you can avoid it.
I prioritize my deployment like this: the Fantomon that directly enhances my class mechanic goes in the main slot, and the next three highest-stat pets fill the secondary slots. The resonance bonus then adds a layer of passive power from everything else in my collection.
Complete Fantomon Tier List for Sword x Staff
Here is the full Fantomon tier list based on our testing across all game modes. I ranked these based on overall value, stat contributions, skill utility, and how well they perform in PvE and PvP content.
| Tier | Fantomon | Rarity | Role | Best For |
|---|---|---|---|---|
| S | Zeioletus | Mythic | Offensive | All DPS classes, universal pick |
| S | Armopi | Mythic | Offensive | Burst damage builds, Duelist |
| S | Nyxarchon | Mythic | Offensive | Mage DPS, Sorcerer main |
| A | Aegiswing | Mythic | Guardian | Knight, Sage, tanky builds |
| A | Sylvaerie | Legendary | Support | Sage, team healing, sustain |
| A | Kels | Legendary | Offensive | PvP focused, Arena Shop exclusive |
| B | Terragon | Legendary | Guardian | Budget tank, good for beginners |
| B | Dark Night Emperor | Legendary | Offensive | Transition DPS, decent burst |
| B | Angel of Dawn | Legendary | Support | Healing, cleanse utility |
| C | Forest Fairy | Epic | Support | Early game placeholder |
| C | Purple Cloud Beast | Epic | Guardian | Early game tank placeholder |
Zeioletus and Armopi sit at the top of every community tier list for good reason. Zeioletus provides massive attack bonuses and its Aura Shot skill scales incredibly well with DPS stats. Armopi brings raw burst potential with high multipliers on its active ability, making it a favorite for Duelist players who want to delete enemies in a single combo.
Nyxarchon is the go-to Mythic for anyone running a magic-heavy build. Its skill interactions with Sorcerer abilities create damage windows that feel almost broken when timed correctly. If you main Sorcerer, Nyxarchon should be your top summon target or Pet Selector Chest priority if available.
Kels deserves special mention because it is only available through the Arena Shop, not through summoning. PvP-focused players should grind Arena currency specifically for Kels, as its offense reduction debuff on enemies is unmatched in competitive modes.
Best Fantomons for Mage Classes (Sorcerer and Sage)
Mage classes in Sword x Staff split into Sorcerer for raw magic DPS and Sage for support and healing. These two classes want completely different things from their Fantomons, so I will break down each one separately.
Best Fantomons for Sorcerer
Sorcerer is all about maximizing damage output through spell rotations and burst windows. You want Fantomons that amplify your attack power, provide defense reduction debuffs on enemies, or add extra damage during your combo sequences.
Nyxarchon (Mythic) – Top Pick: Nyxarchon is the single best Fantomon for Sorcerer in the game. Its active skill synergizes with spell damage calculations, and its passive attack stat boost pushes your numbers higher than any other pet. If you pull Nyxarchon or see it in a selector pool, take it without hesitation.
Zeioletus (Mythic) – Universal S-Tier: Zeioletus works on every DPS class, and Sorcerer is no exception. The Aura Shot ability adds another damage source during your rotation, and the raw attack stats are enormous. If you already have Nyxarchon, Zeioletus goes in a secondary slot for maximum firepower.
Armopi (Mythic) – Burst Synergy: While Armopi is slightly better suited for Duelist, its burst damage active skill still pairs well with Sorcerer burst windows. Pop Armopi’s ability during a spell combo for extra burst that catches opponents off guard in PvP.
Sylvaerie (Legendary) – F2P Alternative: If Mythic Fantomons are out of reach, Sylvaerie provides a strong attack stat base with support utility as a bonus. It is often available in the Pet Selector Chest pool, making it a solid pick for Sorcerer players who want immediate value.
Best Fantomons for Sage
Sage focuses on keeping the team alive with heals, shields, and buffs. Your Fantomon choices should emphasize support stats, survivability, and abilities that complement your healing rotation rather than raw damage.
Aegiswing (Mythic) – Top Pick: Aegiswing is the premier Guardian Fantomon and the best match for Sage. It provides massive defense stats that keep you alive while you channel heals, and its Armor Protection skill creates shields that stack with your own shielding abilities. This combination makes your already-tanky Sage nearly unkillable in group content.
Sylvaerie (Legendary) – Support Queen: Sylvaerie’s Emergency Aid ability directly boosts healing effectiveness, which is exactly what Sage wants. The passive stats also lean toward support metrics like HP and recovery. This is the best Legendary option for Sage and a strong Pet Selector Chest pick if Aegiswing is not available.
Angel of Dawn (Legendary) – Cleanse Utility: Angel of Dawn brings cleanse effects that remove debuffs from your team. Since Sage already handles healing, having a Fantomon that strips crowd control effects gives you full coverage over team survival. This pairing shines in dungeons and raids where bosses stack debuffs.
Forest Fairy (Epic) – Early Game: Before you pull anything better, Forest Fairy serves as a decent support pet for Sage. Its healing boost is small but noticeable in the early levels of the Fantomon system. Replace it the moment you get Sylvaerie or better.
Best Fantomons for Warrior Classes (Duelist and Knight)
Warrior classes in Sword x Staff cover Duelist for melee burst damage and Knight for tanking and crowd control. Like the mage classes, these two builds need very different Fantomons to perform at their peak.
Best Fantomons for Duelist
Duelist lives and dies by burst damage windows. You engage, dump your combo, and either the enemy dies or you disengage. Your Fantomons need to amplify those burst moments and keep you mobile enough to survive between cooldowns.
Armopi (Mythic) – Top Pick: Armopi was practically designed for Duelist. Its burst damage active ability aligns perfectly with Duelist combo windows, and the attack stat contribution is among the highest in the game. When you pop Armopi’s skill during a full Duelist rotation, the damage numbers are genuinely shocking. This is the single best Fantomon for Duelist, period.
Zeioletus (Mythic) – Consistent Pressure: While Armopi handles burst, Zeioletus provides sustained damage pressure between your cooldowns. The Aura Shot fires off consistently, adding damage to every engagement. Duelist players who prefer an aggressive playstyle benefit enormously from having both Armopi and Zeioletus deployed.
Kels (Legendary) – PvP Special: If you spend most of your time in Arena, Kels is mandatory for Duelist. Its offense reduction debuff cripples enemy damage output during trades, giving you the edge in 1v1 situations. Since Kels comes from the Arena Shop, start grinding those PvP matches early.
Dark Night Emperor (Legendary) – F2P Burst: Dark Night Emperor serves as a budget alternative to Armopi for Duelist players who have not pulled a Mythic yet. Its burst active skill deals respectable damage and the attack stats are solid for a Legendary. Pick this from the Pet Selector Chest if Armopi is not in the pool.
Best Fantomons for Knight
Knight is the tank class, built to absorb damage, control enemies with crowd control, and protect teammates. Your Fantomons should make you tankier, provide additional crowd control, or offer team-wide defensive buffs.
Aegiswing (Mythic) – Top Pick: Just like with Sage, Aegiswing is the gold standard for Knight. The Guardian role matches Knight perfectly, and the Armor Protection ability creates damage-absorbing shields that stack with Knight’s own defensive kit. A Knight with Aegiswing in the main slot can face-tank boss mechanics that would flatten any other build.
Terragon (Legendary) – Solid Tank: Terragon is a pure Guardian Fantomon with excellent defense stats and a shield absorption ability. It is more accessible than Aegiswing and often appears in the Pet Selector Chest pool. For Knight players who cannot pull Aegiswing, Terragon is your best friend.
Sylvaerie (Legendary) – Hybrid Tank-Heal: Knight benefits from Sylvaerie’s healing utility in longer fights. The support stats from Sylvaerie give you sustain that pure Guardian pets lack. This is especially valuable in dungeon runs where you are the main tank and every bit of self-healing counts.
Purple Cloud Beast (Epic) – Early Game Tank: Before you get better options, Purple Cloud Beast provides a decent defensive stat boost for Knight. Its shield ability is weaker than Terragon’s but still useful in the early stages of the Fantomon system. Treat this as a temporary placeholder and prioritize upgrading to Terragon or Aegiswing as soon as possible.
Fantomon Leveling, Resonance, and Evolution Guide
Getting the right Fantomon is only half the battle. You also need to level them properly and understand how the resonance and evolution systems work to maximize your power.
Fantomon Leveling System
Fantomons level up by consuming experience materials and gold. The leveling system is slot-based, meaning the level of your deployment slot matters in addition to the Fantomon’s own level. You want to keep your main slot leveled ahead of everything else since it contributes 100% of stats.
I recommend leveling your main Fantomon to the current cap first, then spreading resources across your secondary slots. Do not evenly level all four deployed Fantomons simultaneously. The main slot gives double the stat contribution of secondary slots, so it should always be your priority.
Resonance System
Resonance grants you 20% of every non-deployed Fantomon’s stats passively. This means building a wide collection of Fantomons at decent levels provides a cumulative stat boost that adds up significantly. Players who focus only on their top 4 pets miss out on thousands of bonus stat points from resonance.
The resonance system also means that pulling duplicate low-rarity Fantomons is not entirely wasted. Leveling those extras to moderate levels feeds extra stats through resonance. Think of your entire Fantomon roster as a pyramid, with your main 4 at the top and a broad base of leveled pets supporting them from below.
Materialization and Evolution
Materialization is the combat transformation mechanic where your main Fantomon takes physical form during battle. This happens automatically when certain conditions are met, and the materialized Fantomon fights alongside you with enhanced abilities. The quality of materialization depends on the Fantomon’s level and evolution stage.
Evolution becomes available when a Fantomon reaches level 108. You will need duplicate copies of the same Fantomon to evolve it, which is why pulling multiple copies of the same Mythic is actually desirable rather than disappointing. An evolved Mythic Fantomon gains substantially higher stats and an upgraded active ability.
For Mythic Fantomons specifically, getting duplicate copies for evolution is one of the biggest power spikes in the game. This is another reason why the Pet Selector Chest is so valuable. If you already own a Mythic, using the selector to get a duplicate copy for evolution can be more impactful than picking a new pet entirely.
F2P vs Spender: Pet Selection Strategy
Your approach to the Pet Selector Chest and Fantomon building changes dramatically depending on whether you spend money on the game. Here is how to optimize for both situations.
F2P Player Strategy
Free-to-play players need to be extremely strategic with limited resources. You will not pull many Mythics through regular summoning, so every guaranteed pick matters enormously. Here is my recommended priority order:
- Save all Summon Crystals until level 50 when the Fantomon system unlocks. Many players waste crystals on other systems before realizing they need them for pets.
- Use the Pet Selector Chest on a Legendary that directly fits your class. Sylvaerie for Sage, Dark Night Emperor for Duelist, Terragon for Knight, or Sylvaerie for Sorcerer if no Mythics are available.
- Grind Arena for Kels since it is the strongest non-gacha Fantomon available. Consistent Arena play gives you a free path to a top-tier pet.
- Level wide for resonance rather than pouring everything into one pet. The 20% passive from every owned Fantomon adds up over time.
- Wait for rate-up banners before spending Summon Crystals. A banner featuring Nyxarchon or Zeioletus gives you better odds than the standard pool.
Spender Strategy
Players who spend have more flexibility but should still be smart about resource allocation:
- Prioritize one Mythic Fantomon and aim for duplicate copies for evolution rather than collecting multiple different Mythics. An evolved Nyxarchon with 2 copies beats having Nyxarchon, Aegiswing, and Zeioletus all at base level.
- Use the Pet Selector Chest for evolution copies if you already own a strong Mythic. Getting that second copy to unlock evolution is the biggest power spike available from a single selector.
- Build a focused team of 4 that synergizes with your main class rather than trying to build Fantomons for multiple classes. Specialization beats variety in this system.
Common Fantomon Mistakes to Avoid
After talking with dozens of players on Reddit and Discord, these are the most common mistakes people make with the Fantomon system:
1. Summoning everything at once before understanding the system. Players blow through Summon Crystals the moment the Fantomon system unlocks, then regret it when they learn about rate-up banners and pity counters. Save your crystals for at least a few days after unlocking the system.
2. Putting the wrong Fantomon in the main slot. Your highest-rarity Fantomon is not always the best main slot pick. A Legendary that perfectly matches your class in the main slot outperforms a Mythic with zero synergy sitting there. Always match the main slot to your build.
3. Ignoring the resonance system entirely. Players who only level their 4 deployed Fantomons miss out on massive passive stat bonuses. Even rare Fantomons contribute 20% of their stats through resonance, so build a wide roster.
4. Using the Pet Selector Chest immediately. The chest does not expire. Wait until you understand your class, your current Fantomon collection, and whether you need a new pet or a duplicate for evolution before opening it.
5. Discarding low-rarity Fantomons. Every Fantomon you own contributes resonance stats. Never use pets as fodder material if you can avoid it. Keep them and level them moderately for the passive bonus.
Frequently Asked Questions
What is the Pet Selector Chest in Sword x Staff?
The Pet Selector Chest is a special item that lets you choose a specific Fantomon from a curated pool instead of relying on random gacha pulls. You receive one as a 7-day login reward. It typically includes Epic and higher rarity Fantomons and does not expire, so you can save it until you know which pet fits your build best.
How do I unlock Fantomons in Sword x Staff?
The Fantomon system unlocks at account level 50. You access it through the giant tree at your home base. Before level 50, you cannot summon, deploy, or interact with Fantomons at all. Save your Summon Crystals until you reach this level so you can start pulling immediately upon unlocking.
What is the best Fantomon for Sorcerer in Sword x Staff?
Nyxarchon (Mythic) is the best Fantomon for Sorcerer because its active skill synergizes directly with spell damage calculations and its passive attack boost is enormous. Zeioletus and Armopi are strong alternatives. For F2P players, Sylvaerie (Legendary) is the best accessible option and often appears in the Pet Selector Chest pool.
What is the best Fantomon for Duelist in Sword x Staff?
Armopi (Mythic) is the best Fantomon for Duelist. Its burst damage active ability aligns perfectly with Duelist combo windows and creates massive damage spikes. Kels (Legendary, Arena Shop exclusive) is the top pick for PvP-focused Duelist players because its offense reduction debuff wins 1v1 trades.
What is the best Fantomon for Knight in Sword x Staff?
Aegiswing (Mythic) is the best Fantomon for Knight. Its Guardian role and Armor Protection ability stack with Knight defensive skills, making you nearly unkillable in group content. Terragon (Legendary) is the best F2P alternative and is often available in the Pet Selector Chest.
What is the best Fantomon for Sage in Sword x Staff?
Aegiswing (Mythic) is the top pick for Sage because its shield ability compounds with Sage healing for incredible team sustain. Sylvaerie (Legendary) is the best alternative, boosting healing effectiveness through its Emergency Aid ability. Both are excellent Pet Selector Chest options for Sage players.
How does the Fantomon resonance system work?
Resonance grants 20% of every non-deployed Fantomon’s stats to your character passively. You can deploy up to 4 Fantomons (1 main at 100% stats, 3 secondary at 50% each), and every other Fantomon you own contributes 20% of its stats through resonance. This means owning and leveling a wide roster of pets provides a significant cumulative bonus.
Should I save Summon Crystals or spend them immediately?
Save your Summon Crystals for rate-up banners featuring the specific Mythic Fantomon you want. The base Mythic pull rate is only 0.8%, so waiting for a banner that boosts your target pet’s rate gives you much better odds. Also save crystals until you reach level 50 and unlock the Fantomon system before spending anything.
Final Thoughts on the Best Fantomons for Every Class
Picking the right pet from the Pet Selector Chest for your class in Sword x Staff is one of the most impactful decisions you will make early in the Fantomon system. A well-matched Fantomon amplifies your build, while a poor pick sets you back significantly in both PvE and PvP content.
Here is the quick summary for the Pet Selector Chest best Fantomons for every class: Sorcerer should target Nyxarchon or Sylvaerie, Sage should grab Aegiswing or Sylvaerie, Duelist should aim for Armopi or Dark Night Emperor, and Knight should pick Aegiswing or Terragon. If you already own one of these at Mythic rarity, consider using the selector on a duplicate copy to accelerate evolution at level 108.
Take your time with the selector, build your resonance roster wide, and focus your Summon Crystals on rate-up banners for the specific Mythic your class needs. The Fantomon system is a marathon, not a sprint, and players who plan their pulls and selections carefully will always outperform those who spend recklessly.