Card Text:
Trample
Whenever Grim Flayer deals combat damage to a player, surveil 3. <i>(Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)</i>
<i>Delirium</i> — Grim Flayer gets +2/+2 as long as there are four or more card types among cards in your graveyard.