Here are some of the Okainos cards you can find !
Average koi

Add 1 to boost - give it to next card
Samurai koi

If the ennemy is weaker it doesn't take damage.
Lily koi
Multiply by 2 the boost - doesn't apply the boost to itself- give it to next card
Knife thrower

Boarding : attack to 8 - then back to 1
Hypnofrog
Summon a random card The summoned card is half price
Pirate king
Boarding (first turn) Take 2 of strength - And Give 2 of it's cost to the adversary card
Cute-lefish

Count as 2 cuttlefishes
Card-lefish
Add to draw for cuttlefishes
played (Max of 3)
Emperor
Get stronger for every cuttlefishes in the counter
Card bot

Head : draw 3
Tail : draw 0
Explobot
Head : Survive
Tail : Explode (no damage)
Jack bot

Every head -1 cost
Every tail +1 strength