Butterfree

You may sacrifice a creature named Metapod rather than pay this spells mana cost.
Flying.
{t}: Detain target creature.
{2}, {t}: Target player's creatures get -X/-X until
end of turn, where X is half of Butterfree's
toughness rounded down.
Landfall —Whenever a land enters the battlefield
under your control, create a Food token. (Food is an artifact with: {2}, {t}, Sacrifice this
artifact: You gain 3 life.)