Crazed Tutor

Search your library or graveyard for an instant
or sorcery card and reveal that card. You may
cast that spell without paying it's mana cost. If
you do, discard a card and Crazed Tutor deals
damage to you equal to that card's converted
mana cost.
Shuffle your library, then put that card on top
of it.
"Half genius, half blind, and half insane."