Anti-Venom, Horrifying Healer + Agatha's Soul Cauldron + Walking Ballista + Shang-Chi, Martial Mentor

Anti-Venom, Horrifying Healer

Agatha's Soul Cauldron

Walking Ballista

Shang-Chi, Martial Mentor

How it works

1. Activate Anti-Venom using Walking Ballista'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 Shang-Chi.
2. Activate Anti-Venom using Walking Ballista's ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
3. Repeat.

This loop transforms your creatures into a self-sustaining artillery battery by feeding Walking Ballista's activated ability into Agatha's Soul Cauldron, which grants those exact abilities to anything bearing a +1/+1 counter. Shang-Chi, Martial Mentor supercharges the system by doubling every counter placed, ensuring that whenever Anti-Venom, Horrifying Healer redirects and prevents damage to itself, it gains a surplus of counters. By repeatedly pinging and repairing Anti-Venom with Walking Ballista's counter mechanics, you generate infinite damage and infinite +1/+1 counters to obliterate the table.