Anti-Venom, Horrifying Healer + Agatha's Soul Cauldron + Triskelion + Branching Evolution

Anti-Venom, Horrifying Healer

Agatha's Soul Cauldron

Triskelion

Branching Evolution

How it works

1. Activate Anti-Venom using Triskelion's ability by removing a +1/+1 counter from it, targeting itself and putting two +1/+1 counters on it due to its replacement effect and Branching Evolution.
2. Activate Anti-Venom using Triskelion's ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
3. Repeat.

By exiling Triskelion into Agatha's Soul Cauldron, you grant its activated ability to any creature you control that has a +1/+1 counter on it. Anti-Venom, Horrifying Healer happily takes on this fiery capability, and thanks to Branching Evolution doubling any counters placed upon it when self-inflicting damage, the loop becomes entirely self-sustaining. You can endlessly ping any target for infinite damage while growing Anti-Venom into an unfathomably massive threat.