Avatar of the Shaded Erdtree

Whenever a creature you control dies, put a decay counter on Avatar of the Shaded Erdtree.

Remove three decay counters from Avatar of the Shaded Erdtree: Each opponent sacrifices a creature or discards a card.

At the beginning of your upkeep, if Avatar of the Shaded Erdtree has five or more decay counters, you may pay 3 life. If you do, destroy target creature or artifact.

"Once a guardian of life, now a harbinger of blight."