Ebiko, the Spicy

Double strike, menace

VOIDtaint Exposure —When Ebiko, the Spicy attacks, all other creatures get -1/-1.

Shrimp Alchemy —All instances of {u} on cards in your hand can be paid with 2 life instead.
Whenever you pay life this way to pay for spells, create a 1/1 blue Shrimp creature token with "When this creature dies, gain 1 life."