Essence Gorger

Deathtouch
Delirium - As long as there are four or more card
types among cards in your graveyard, Essence
Gorger has "Sacrifice a permanent with
converted mana cost X: You draw X cards and
Essence Gorger deals X damage to you."
Threshold - As long as there are seven or more
cards in your graveyard, Essence Gorger loses all
other abilities.