Anti-Venom, Horrifying Healer + Agatha's Soul Cauldron + Triskelion + The Rollercrusher Ride

Anti-Venom, Horrifying Healer

Agatha's Soul Cauldron

Triskelion

The Rollercrusher Ride

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 The Rollercrusher Ride.
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, any creature you control with a +1/+1 counter gains Triskelion's ability to ping for 1 damage by removing a counter. Anti-Venom, Horrifying Healer becomes the ideal host for this ability because its native replacement effect turns incoming damage into extra +1/+1 counters instead. When you layer in The Rollercrusher Ride's delirium damage-doubling effect, pinging Anti-Venom with its own newly-acquired ability generates a net surplus of counters—preventing the damage entirely while adding more than you removed. This creates a self-sustaining loop of infinite damage and infinitely large creatures ready to obliterate the table.