Sword x Staff Fantomon Guide: Best Pets, Gacha Rates, Evolution Tips & Deployment Explained
Reese Avery
|2026-05-18If you thought unlocking pets in Sword x Staff would give you a cute little companion that sits there looking pretty, the game has other plans. Fantomons are basically stat steroids disguised as magical animals. Some turn into giant battlefield monsters. Others quietly carry your account from the background like exhausted office workers doing unpaid overtime.
In this Sword x Staff Fantomon guide, we will cover how to unlock Fantomons, summon rates, deployment mechanics, leveling, resonance, aptitude upgrades, evolution requirements, Materialization, and the best strategies for both free to play and low spender players.
Contents
What Are Fantomons in Sword x Staff?
Fantomons are pet companions that provide passive stats and can also participate in battle. The system unlocks at account level 50 through the giant tree located at your home.
Every Fantomon you own contributes stats to your character, even if they are not actively deployed. However, deployed Fantomons provide much larger bonuses.
If you want to compare every available pet, make sure to check a Fantomon tier list and database before investing valuable resources.
How to Obtain Fantomons
Fantomons are summoned through the tree at your home using the gacha system.
Fantomon Gacha Rates
Current summon rates are:
- SSR Fantomons: 0.8%
- SR Fantomons: 5%
The game also guarantees at least 1 Summon Crystal every 10 pulls.
Summon Crystal Exchange Shop
You can exchange Summon Crystals for specific Fantomons.
Currently, there are only two Mythic Fantomons available:
- Aegiswing
- Nyxarchon
Both require 60 Summon Crystals each.
You can also purchase Sylvaerie for 18 Summon Crystals, but most players should save for Mythic Fantomons instead since the power difference is massive.
Save Your Summons Early
Many experienced players recommend saving summon materials until level 50 when the Fantomon system unlocks.
Why?
- Pulls become immediately useful
- You can target strong pets directly
- Resources are less likely to be wasted
A lot of players summon everything early, then watch other players fly around with Mythic Fantomons while questioning every life decision they have ever made.
Important Duplicate Copy Requirement
Do not spend all your crystals after getting your first Mythic.
You need a second copy of the same Mythic Fantomon to evolve it later at level 108.
Future you will either thank present you, or hate present you.
Arena Shop Exclusive Fantomon
Kels is unique because it cannot be summoned from the tree.
The only way to obtain Kels is through the Arena Shop using arena currency, so PvP players should keep an eye on the shop regularly.
Fantomon Deployment Explained
You can deploy up to 4 Fantomons.
However, every Fantomon you own contributes passive stats at different rates depending on placement.
Deployment Stat Ratios
- Main Slot: 100% stats
- Secondary Slots: 50% stats
- Remaining Owned Fantomons: 20% stats
Because of this, your highest rarity Fantomon should always occupy the main slot.
Priority usually looks like this:
- Mythic
- Legendary
- SSR
- SR
Main Fantomon vs Combat Fantomon
This is one of the most misunderstood mechanics in the game.
Your main stat Fantomon does NOT need to be the same Fantomon you bring into battle.
Main Slot = passive stat optimization
Combat Slot = active combat utility
These are separate systems.
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How Fantomon Leveling Works
Fantomons use Basic Treats for leveling.
How to Get Basic Treats
You can obtain Basic Treats from:
- Cart idle rewards
- Daily cart shop using Rolla
- Guild shop plants and animals
- Other Fantomon related activities
Eventually your inventory starts looking less like an RPG backpack and more like a pet supermarket.
Slot Based Leveling System
A lot of new players think each Fantomon must be individually raised forever.
Actually, progression is more closely tied to deployment slots than individual pets.
This means:
- Swapping Fantomons does not completely waste progress
- Your investment is more flexible than most mobile RPG systems
- You mainly focus on your core deployed Fantomons
Because of this, changing teams later is much less painful than players initially expect.
Fantomon Resonance System
The Resonance system helps reduce leveling pressure significantly.
The lowest level among your 4 deployed Fantomons becomes the resonance level for all other Fantomons you own.
If your deployed Fantomons are:
- Level 130
- Level 128
- Level 127
- Level 135
Then every other Fantomon automatically counts as level 127.
Because of this, you should level your main four Fantomons evenly instead of dumping everything into one single pet.
This is also why many players recommend the “4 core Fantomon strategy.”
Fantomon Aptitude Guide
Aptitude works like a skill tree system.
It boosts both Fantomon stats and your character’s overall stats.
Aptitude Tips
- Only heavily invest into your 4 deployed Fantomons
- Aptitude materials are limited
- You can reset Aptitude later if needed
Do not randomly spend all your materials at 2 AM after losing arena matches. The reset exists, but emotional damage is permanent.
Resource Refund and Flexibility
Community testing suggests that changing Fantomons is not nearly as punishing as many other gacha games.
Some upgrade investment can be transferred or partially refunded.
Because of this:
- Early mistakes are recoverable
- Experimenting with different Fantomons is possible
- Players have more flexibility than expected
However, Mythic resources remain extremely valuable, especially duplicate copies and high tier Aptitude materials.
7 Day Fantomon Selector Recommendations
Many beginners struggle with the free selector decision.
For Raw Combat Power
Choose higher rarity Fantomons whenever possible.
Higher rarity pets generally offer:
- Better base stats
- Stronger scaling
- Better late game value
For Support or Healer Builds
Some lower rarity Fantomons actually work better for support focused classes.
Utility and synergy sometimes matter more than rarity.
In short:
- Maximum power → prioritize Mythic or Legendary
- Better synergy → choose based on your class build
Do not blindly pick based only on rarity color.
Fantomon Evolution Guide
Evolution unlocks Materialization form, which grants powerful active combat skills.
Evolution Requirements
To evolve a Fantomon, you need:
- Level 108
- Access to Nimbuville
- Mythic rarity
- A duplicate copy of the same Fantomon
This is why duplicate Mythics are incredibly important.
How Materialization Works
During battle, energy rings around the Fantomon icon slowly fill up.
Once fully charged, the Fantomon transforms into its Materialization form.
Battle Behavior
Before Materialization:
- Only assist skills are active
After Materialization:
- Only battle skills activate
If the Fantomon faints, it returns to assist mode and the energy resets completely.
So yes, your tiny floating pet suddenly transforms into the main anime protagonist for a few seconds before immediately collapsing from exhaustion.
Best Strategy for Free to Play and Low Spenders
Community consensus is very clear here.
Do Not Build Every Fantomon
Instead:
- Focus resources on 4 core Fantomons
- Use Resonance to support the rest
- Save Aptitude materials carefully
- Plan Mythic duplicate copies ahead of time
Otherwise you eventually reach the classic idle RPG disaster state:
“Everything is upgraded, but somehow nothing is strong.”
Conclusion
Fantomons are one of the most important progression systems in Sword x Staff. Even though the summon rates can feel emotionally devastating, a properly built Mythic Fantomon provides massive stat boosts and powerful combat advantages.
Focus on building a balanced core team, save your Summon Crystals wisely, and avoid spreading resources across too many pets too early. Your future account progression will become much smoother, and your sanity may survive slightly longer.
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