Grim Flayer

Trample
Whenever Grim Flayer deals combat damage to
a player, look at the top three cards of your
library. Put any number of them into your
graveyard and the rest back on top of your
library in any order.
Delirium -- Grim Flayer gets +2/+2 as
long as there are four or more card types among
cards in your graveyard.