Okaun, Eye of Chaos

Partner with Zndrsplt, Eye of Wisdom (When
this creature enters the battlefield, target player
may put Zndrsplt into their hand from their
library, then shuffle.)
At the beginning of combat on your turn, flip a
coin until you lose a flip.
Whenever a player wins a coin flip, double
Okaun’s power and toughness until end of turn.