Counterpoise

Crystallize {r}{g}(When you successfully cast this spell
from your hand, exile it and create a Crystal artifact
token with "{r}{g}, Sacrifice this permanent: You may
cast Counterpoise from exile for {x} until end of turn.")
Create X token copies of a creature targeted by a
spell. Those creatures have a base power and toughness 1/1, have Haste and "Sacrifice this
creature at the end of your next turn." If you cast
Counterpoise from exile, you may copy that spell
for X of those tokens