Oko, Woodland Trickster

Ward {3}
Whenever Oko, Woodland Trickster enters the battlefield or attacks, create a Food token.
At the beginning of combat on your turn, Oko
becomes a copy of up to one other target creature
you control until end of turn.
{4}{g}{u}, Sacrifice X Foods: Exchange control of
target artifact or creature you control and target
creature an opponent controls with mana value
equal to X or less.