Shigaraki, Decay incarnate

Firststrike, Deathtouch.
• Decay - At the beginning of each player’s upkeep, each opponent sacrifices a permanent. Whenever a permanent an opponent controls is sacrificed, put a +1/+1 counter on Shigaraki.
•Symbol of Ruin - Creatures your opponents control get -1/-1 for each nonland permanent in their graveyard.
"With every piece that crumbles, I grow closer to ending it all."- Tomura shigaraki