At the beginning of combat on your turn, Oko, the Ringleader becomes a copy of up to one target creature you control until end of turn, except he has hexproof.
[+1]: Draw two cards. If you've committed a crime this turn, discard a card. Otherwise, discard two cards.
[−1]: Create a 3/3 green Elk creature token.
[−5]: For each other nonland permanent you control, create a token that's a copy of that permanent.