Overpower

Crystallize {b}{b}{b}(When you successfully cast this
spell from your hand, exile it and create a Crystal
artifact token with "{b}{b}{b}, Sacrifice this permanent:
You may cast Overpower from exile for {0} until end
of turn.")
Copy target instant or sorcery spell with more
than one target then counter it. You may choose
new targets for the copy. If Overpower was cast
from exile, target opponent loses life equal to
that spell's converted mana cost.