Kunai

RareStandardFits all units

Available now
Routes5
IntroducedUpdate 0

PassiveNone — this piece changes stats only

What one copy rolls

Damagehigher is better

worst 1%best roll 10%

SPAlower is better

worst -1%best roll -5%

How to get it

DropStory · School Grounds · Act 5 · Hard
×1
Chance per clear5%
Guaranteed within 20 clears.
CraftArmory Forge
×1
What it costs
- Equipment Scrap×5
- Sprite (Red)×10
QuestQuests: Quests / NewPlayerEvent / C1Q3
×1
Battle PassBattlepass: Battlepasses / Season1 / Rewards
×1
Battle PassBattlepass: Battlepasses / Season1 / Rewards
×1

How rolls land

Checked 01 Sept 2026 22:27 UTC

Every stat is rolled per copy. The ranges above are the two ends; this is where inside them a roll actually falls.

Where a roll lands in the range

Roll band

Rare70%

Epic25%

Legendary4%

Mythic1%

worst rollbest roll

Reaching the top of a range means landing in the Mythic band — 1% of rolls. Each band decides where in the range a roll falls, as a fraction of that range.

Where inside a band a roll lands

What can be said is the band and its odds, which are listed above exactly as the game declares them.

How a roll applies

Damage and SPA compound as pieces are added, so two of them are not the sum of their two numbers. Every roll is a percentage change applied after the piece is equipped. The final stat depends on the unit and its full build, so use the roll values as modifiers rather than treating them as finished stats.

Value and rerolling

Sell value

25 Gold

Piece rarityRare

Scrapped, it yields

Sprite (Grey)×1
SpriteLegendary×1
Equipment Scrap×3

Changing a roll

Two items do this, and both are bought rather than dropped.

Equipment Rerollrerolls a stat
Equipment Lockkeeps a rolled stat

Every shop listing for Equipment Reroll.

Shop	Price	Stock	Restocks
Villain Invasion	100 Villain Coins	100	No
Summer Shop	100 Sand Dollar	100	No
Event Shop	10 Event Coin ×3	—	No
Wandering Trader	250 Gem	5	Every 30 minutes
General	10 Raid Token ×3	10	Every 1 week
Spirit City	10 Spirit Token ×3	10	No
Gold Shop	2,500 Gold	10	Every 1 day

Every shop listing for Equipment Lock.

Shop	Price	Stock	Restocks
Villain Invasion	100 Villain Coins	100	No
Summer Shop	100 Sand Dollar	100	No
Event Shop	10 Event Coin	—	No
Wandering Trader	250 Gem	5	Every 30 minutes
General	10 Raid Token	10	Every 1 week
Spirit City	10 Spirit Token	10	No
Gold Shop	2,500 Gold	10	Every 1 day

Equipment inventory starts at 100 slots and can be extended to 500 slots, each further slot costing 1,000 Gold.

Which units can hold it

Every unit the game publishes has at least one standard slot — 81 of them — so any of them can hold this piece.

Equipment slots the game grants, by the unit’s own rarity — not the piece’s.

Unit rarity	Units published	Standard slots	Signature slots	Total slots
Mythic	41	2	1	3
Secret	12	2	1	3
Exclusive	8	2	0	2
Legendary	8	2	0	2
Epic	6	1	0	1
Rare	6	1	0	1

Kunai

How to get it