Dregzi de'Gorn, Murder Chef

When Dregzi de'Gorn, Murder Chef enters the battlefield, create two Food tokens.
{1}{r}{r}, {t}, Sacrifice a Food: Creatures you control get +1/+0 until end of turn.
{1}{b}{b}, {t}, Sacrifice a Food: Creatures your opponent controls get -1/-1 until end of turn. For the rest of the turn, each time one or more creatures dies, create a Food token.