Nnod, Undead Abomination

Delirium — Whenever Nnod dies, if there are
four or more card types among cards in your graveyard, return another target permanent card
from your graveyard to your hand
Dredge 5(If you would draw a card, you may mill
five cards instead. If you do, return this card from
your graveyard to your hand.)
It has a seventh sense that allows it to perceive
undead stimuli.