Roe, the Abyss Awakened

Reach, Hexproof, Lifelink.
Primordial (This creature takes half combat damage
from any source that is not an Elder and Angel/Archaetherian. Negates protection.)
Creeping Darkness - Every creature on the field no longer heals from combat damage.
If Roe, the Abyss Awakened is still on the field in
six turns you win the game.
"In my sleep I dreamt of a lightless world...it was a paradise."