Soul Shatter

Destroy target creature. You and its controller
both lose life equal to its converted mana cost.
If you cast this card for its spectacle cost, that creature's controller puts the top X cards from
his or her library into his or her graveyard.
Spectacle {b}, Put X cards from the top of
your library into your graveyard. (You may cast
this spell for its spectacle cost rather than its mana cost
if an opponent lost life this turn.)