Sothera, the Supervoid

Mana cost: {2}{B}{B}

Legendary Enchantment

Whenever a creature you control dies, each opponent chooses a creature they control and exiles it. At the beginning of your end step, if a player controls no creatures, sacrifice Sothera, then put a creature card exiled with it onto the battlefield under your control with two additional +1/+1 counters on it.