Kaia The DreamWalker

Partner with OtherWorld Kaia (When this creature enters the battlefield, target player may put OtherWorld Kaia into their hand from their library and reshuffle)

Every Time Kaia The DreamWalker blocks an attack, put
a +0/+1 counter on her.

{t}{b}{b}{b}: Create a Black Emblem Portal Token. This ability can only be activated once