Oko, the Trickster

Legendary Planeswalker — Oko

[+1]: Put two +1/+1 counters on up to one target creature you control. [0]: Until end of turn, Oko becomes a copy of target creature you control. Prevent all damage that would be dealt to him this turn. [−7]: Until end of turn, each creature you control has base power and toughness 10/10 and gains trample.