Anti-Venom, Horrifying Healer + Agatha's Soul Cauldron + Triskelion + Ozolith, the Shattered Spire

Anti-Venom, Horrifying Healer

Agatha's Soul Cauldron

Triskelion

Ozolith, the Shattered Spire

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 Ozolith, the Shattered Spire.
2. Activate Anti-Venom using Triskelion's ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
3. Repeat.

This clever loop turns Triskelion into a self-sustaining engine by feeding its activated ability through Agatha's Soul Cauldron, granting its pinging power to Anti-Venom, Horrifying Healer once its activated abilities are shared via +1/+1 counters. By using Triskelion's counter-removal to trigger damage, Anti-Venom's damage prevention replacement effect turns that incoming harm into even more counters. Meanwhile, Ozolith, the Shattered Spire quietly supercharges the whole process by increasing the number of +1/+1 counters placed on creatures, ensuring the loop never runs dry and easily finishes off any opponent.