Anti-Venom, Horrifying Healer + Agatha's Soul Cauldron + City on Fire + Deathbringer Thoctar

Anti-Venom, Horrifying Healer

Agatha's Soul Cauldron

City on Fire

Deathbringer Thoctar

How it works

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

This looping engine turns a humble stack of counters into an unstoppable storm of lethal force, heavily accelerated by City on Fire tripling every point of damage dealt. With Deathbringer Thoctar exiled into Agatha's Soul Cauldron, its activated ability is granted to any creature you control that holds a +1/+1 counter. Anti-Venom, Horrifying Healer happily steps into this role; whenever its acquired ability removes a counter to ping for 1 damage, City on Fire scales that blow to 3 damage, which Anti-Venom's own replacement effect turns right back around into three fresh +1/+1 counters. You are left with a net gain of counters with every iteration, safely cycling the loop to blast away opponents and their boards indefinitely.