Lumi MasterAll games

Lumi Master/Lumis

Ground54–86Petrokat

Petrokat

GreenBluePurpleGoldRating 54–86GroundBattle

Job tagsMining

At a glance

C
Why this tier

Petrokat is C: Sacred Earth makes allies with DEF stages immune to crits and 106 DEF keeps it up, but 88 ATK never finishes anything. Rochelon gives Ground teams more for the slot.

Petrokat's skills

Fixed kit always on Petrokat, can't be swapped

Trait · passiveSacred Earth

While in your squad and still standing, allies with a positive DEF stage can't be critically hit. Each additional Earth Lumi in your squad increases the DEF boost by 10%.

Signature skillElement Resonance

Fires an energy ball of this Lumi's own type at the current enemy; +10 power each time your side uses a skill of that type.

GroundCost 5Power 75

Basic attackEarth Ball

Its automatic attack: a Ground hit every 1s for 10 power.

GroundPower 10Interval 1s

Swappable skills choose which one to equip

Earth BarrierUsed in official line-ups

Raises this Lumi's DEF by 2 stages.

GroundCost 3Power 0

Earth RetreatUsed in official line-ups

Hits the current enemy and switches out; the Lumi coming in gains +1 DEF stage.

GroundCost 4Power 30

Charge Up

The next skill this Lumi uses (other than Charge Up) gains +40 power. Lost if it switches out.

NormalCost 4Power 0

Earth Spike

Drops a trap where the current enemy is standing. Any enemy Lumi that moves onto it loses 10% of its max HP.

NormalCost 3Power 0

Mud Charge

Hits the current enemy, cures all of this Lumi's Paralysis and lowers its DEF by 1 stage.

GroundCost 5Power 90

Landslide

Hits every enemy on the field with falling rock; +50% power when there is more than one target.

GroundCost 7Power 120

Skills marked "Used in official line-ups" are the ones the game's own in-client line-ups equip on Petrokat. See those line-ups.

How to use Petrokat

Petrokat stops crits. While it stands, Sacred Earth makes any ally with a positive DEF stage immune to critical hits, which shuts down crit teams built on Nimble or Raid. Earth Barrier and Earth Retreat hand out those DEF stages. 106 DEF is high. 88 ATK is weak, so it needs an attacker beside it. Rochelon is the better Ground pick in the Arena.

Compared with

The strongest Battle on the tier list and the ones placed just above Petrokat, strongest first.

Recommended build

The game's own in-client line-ups run Petrokat with Earth Barrier equipped: 3 official setups below, plus the materials it levels, stars up and evolves with.

Trait & signature skill (fixed)
Sacred EarthSacred EarthTrait
Element ResonanceElement ResonanceSignature skill

Sacred Earth: While in your squad and still standing, allies with a positive DEF stage can't be critically hit. Each additional Earth Lumi in your squad increases the DEF boost by 10%. Element Resonance: Fires an energy ball of this Lumi's own type at the current enemy; +10 power each time your side uses a skill of that type.

Skill to equip
Earth BarrierEarth BarrierChosen in 2 of 3 official setups
Earth RetreatEarth RetreatChosen in 1 of 3 official setups
Trainer skill
HealingHealingRun in 2 of 3 official setups
ShieldShieldRun in 1 of 3 official setups

Healing: Restores 30% of Max HP to ally Lumi on the field. Shield: Applies a shield to your own Lumi on the field, making them immune to the enemy's next skill damage and debuff. Expires upon leaving.

Level up & ascension
Sharkitten KeepsakeSharkitten KeepsakeLevels up and ascends this line
Universal KeepsakeUniversal KeepsakeSwaps in for any Keepsake
Star Up
Sharkitten StarcoreSharkitten StarcoreRaises this line's star level
Universal StarcoreUniversal StarcoreSwaps in for a regular or variant Lumi's Starcore

Each star adds damage dealt and cuts damage taken: ★1 +5% / -5%, up to ★5 +25% / -25%.

The Trait and Signature Skill come with this Lumi and can't be changed, so they set what the rest of the build is for. The skill and trainer skill picked above are the game's own — read straight off its official in-client line-ups on the Official Line-ups page. The Keepsake, Starcore and evolution materials are this line's own real items, from the game's own tables. Star Up's damage/mitigation numbers are the game's own published curve.

Type matchup

Takes extra damage from
Water×2Grass×2Ice×2Brawler×2
Takes reduced damage from
Fire×0.5Electric×0.5Flying×0.5

Recomputed from the game's own type chart against this Lumi's type(s) — dual types multiply. See the full Type Chart for every match-up.

Evolution line

Stage 1
SharkittenSharkitten
Stage 2
RainkatRainkatLv. 15 · Evolution Fruit ×1PsykatPsykatLv. 15 · Evolution Fruit ×1LeafkatLeafkatLv. 15 · Evolution Fruit ×1FierikatFierikatLv. 15 · Evolution Fruit ×1JolkatJolkatLv. 15 · Evolution Fruit ×1AerikatAerikatLv. 15 · Evolution Fruit ×1PetrokatPetrokatLv. 15 · Evolution Fruit ×1SharkatSharkatLv. 15 · Evolution Fruit ×1

Sharkitten can become any of 8 forms at Lv. 15. Elemental Crystals steer which one it turns into, and Advanced Elemental Crystals let you pick the form outright.

Attributes

ATK56–88DEF74–106HP56–88Work30–62

MaxMin

MinMax
ATK5688
DEF74106
HP5688
Work3062
Attack SpeedRoster average1s

Each column is the species' own Min–Max range at its reference level — the exact spread the in-game Aptitude tab shows (an individual catch rolls somewhere inside it). See the Stat Rankings to sort the whole roster by any of these. Attack Speed is the Skill tab's Attack Interval: the seconds between automatic basic attacks, fixed per species, so lower is faster. Every basic attack deals the same damage per second, so a quicker one lands more hits rather than more damage, which is what on-hit effects care about. Each Swift stack speeds it up by 10% and each Paralysis stack slows it by 10%.

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