Autumnal Gloom // Ancient of the Equinox [Shadows over Innistrad]

Description

{B}: Mill a card.
Delirium — At the beginning of your end step, if there are four or more card types among cards in your graveyard, transform Autumnal Gloom.

Trample, hexproof”When the leaves fall and the nights grow cold, look elsewhere for firewood.”—Ola of Lambholt