Emilia, Witch of the Wilds

Whenever you cast an instant or sorcery spell
create a food token.
{g}{b}{u}, {t}, Sacrifice a creature: Gain control of
target creature or planeswalker with CMC equal
or less to the amount of food tokens you control.
Sacrifice a food token: Target creature gets
-1/-1 until end of turn.
I'm going to need something in return, dear....