Akawalli, the Seething Tower
{1}{B}{G}Legendary Creature — Fungus
Descend 4 — As long as there are four or more permanent cards in your graveyard, Akawalli gets +2/+2 and has trample. Descend 8 — As long as there are eight or more permanent cards in your graveyard, Akawalli gets an additional +2/+2 and can't be blocked by more than one creature.