Severus Snape

Page 394 (When Severus Snape enters the battlefield
you may look at the top 4 cards of your library. If you
do, put 1 into your hand, 1 on the bottom of your
library and the rest into your graveyard.)
{1}{g}{t}: If you control a student Snape's cape is
set on fire. Put the top 2 cards of your library
into your graveyard.
-If you don't control a student Snape's lovely
lady locks look dodgy. Exile Severus Snape and
return him to the battlefield transformed.