Bone Colossus

Trample, Menace
Undergrowth — When Bone Colossus enters the battlefield, it deals 1 damage to target opponent for
each creature card in your graveyard.
{3}{b}{b}, Sacrifice a creature: Return Bone Colossus
from your graveyard to the battlefield. Activate only
on your turn.

"Myrkrax' greatest accomplishment was immortality.
This is a close second." - Timeless Cult Aspirant