Anti-Venom, Horrifying Healer + Agatha's Soul Cauldron + Triskelion + Innkeeper's Talent

Anti-Venom, Horrifying Healer

Agatha's Soul Cauldron

Triskelion

Innkeeper's Talent

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 Innkeeper's Talent.
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 loop is forged by exiling Triskelion into Agatha's Soul Cauldron, granting its activated ability to any creature you control that holds a +1/+1 counter. Anti-Venom, Horrifying Healer happily steps into that role, utilizing its own damage-prevention replacement effect to convert the self-inflicted pings into a surplus of +1/+1 counters. Meanwhile, Innkeeper's Talent supercharges the process at Level 3 by doubling all counters placed on your permanents, ensuring you net a positive supply of counters with every iteration. The result is a self-sustaining engine that repeatedly triggers Triskelion's borrowed ability to dismantle your opponents with infinite damage.