Despair, Horse of Death

Equip {p/b}{p/b}{p/b} (Only attach to Pale Rider. Equip
only as a sorcery.)
Pale Rider gains +2/+2, Reach, Vigilance, and Deathtouch.
Whenever Pale Rider is dealt damage directly or
does damage to a player transform Pale Rider
to Death, Leader of the Horsemen.
I looked and there before me was a pale horse