How to play Koala OP12-081
Black / Yellow Leader · deck guide from 1,200 simulated games against the 12 most-played decks · updated November 2, 2026
Played with its most common tournament list, Koala won 40.4% of games against the current meta. Games ran about 5.5 of its own turns.
When this Leader attacks your opponent's Leader, if you have 2 or more Characters with a cost of 8 or more, draw 1 card.
[Once Per Turn] This effect can be activated when your opponent plays a Character with a base cost of 8 or more, or when your opponent plays a Character using a Character's effect. Your opponent adds 1 card from the top of their Life cards to their hand.
Go first or second?
Go second. Wins 45% going second vs 36% going first.
Mulligan: what to keep
Hands with 3 or more early Characters (cost 1–4) won most often (40.8%). The cards that matter most in an opening hand are Loki (+18.9 points), Roronoa Zoro (+10.8 points), Karasu OP09-100 (+8.0 points), Koala EB03-042 (+7.3 points), Borsalino (+5.7 points): hands with them win that much more often than hands without. Hands with Belo Betty, Jaguar.D.Saul, Sanji win less often (−12.7, −7.7, −7.5 points).
| Early Characters in opening hand | Games | Win rate |
|---|---|---|
| 2 | 468 | 39.7% |
| 3 or more | 732 | 40.8% |
Turn by turn
What the deck plays most often on each of its turns:
- Turn 1:
Koala OP12-086 (35% of games) or 
Captains Assembled (14% of games) - Turn 2:
Hack (12% of games) or 
Baby 5 (12% of games) - Turn 3:
Bartholomew Kuma (21% of games) or 
Borsalino (12% of games) - Turn 4: Bartholomew Kuma (26% of games) or
Monkey.D.Dragon (14% of games) - Turn 5: Monkey.D.Dragon (19% of games) or
Stussy (18% of games) - Turn 6: Monkey.D.Dragon (28% of games) or
Charlotte Linlin OP17-112 (14% of games)
Key cards
| Card | Played in | Usual turn |
|---|---|---|
| Koala OP12-086 | 54% | 1.9 |
| Bartholomew Kuma | 50% | 3.7 |
| Captains Assembled | 45% | 3.2 |
| Monkey.D.Dragon | 43% | 5.0 |
| Hack | 28% | 3.0 |
 Monkey.D.Luffy OP17-093 | 26% | 4.9 |
Matchups
Best: Yamato (89.0%), Kaido (88.0%), Monkey.D.Luffy OP13-001 (56.0%). Hardest: Rocks.D.Xebec (9.0%), Monkey.D.Luffy OP17-079 (13.0%), Luffy & Ace (19.0%).
| Against | Win rate | Games |
|---|---|---|
| Yamato OP16-079 | 89.0% | 100 |
| Kaido OP17-058 | 88.0% | 100 |
| Monkey.D.Luffy OP13-001 | 56.0% | 100 |
| Donquixote Rosinante OP12-061 | 53.0% | 100 |
| Enel OP05-098 | 47.0% | 100 |
| Enel OP15-058 | 41.0% | 100 |
| Boa Hancock OP14-041 | 25.0% | 100 |
| Portgas.D.Ace OP16-001 | 24.0% | 100 |
| Sabo OP13-004 | 21.0% | 100 |
| Luffy & Ace ST30-001 | 19.0% | 100 |
| Monkey.D.Luffy OP17-079 | 13.0% | 100 |
| Rocks.D.Xebec OP17-039 | 9.0% | 100 |
How these numbers are made: the site's game engine plays full games (DON!!, attacks, blockers, counters, triggers and card effects) between tournament decklists, with the same AI on both sides. They show how the deck plays on average, not how a top player would pilot it. Differences under about 3 points are within noise.