Strong, the Brutish Thespian + Agatha's Soul Cauldron + Walking Ballista

Strong, the Brutish Thespian

Agatha's Soul Cauldron

Walking Ballista

How it works

1. Activate Strong using Walking Ballista's second ability by removing a +1/+1 counter from it, dealing 1 damage to Strong.
2. Strong triggers, putting three +1/+1 counters on it and causing you to get three rad counters.
3. Repeat an arbitrarily large number of times.
4. Activate Strong using Walking Ballista's second ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
5. Repeat step 4 as desired.

This clever loop transforms self-inflicted damage into an endless engine by leveraging Agatha's Soul Cauldron to grant Walking Ballista the activated ability of Strong, the Brutish Thespian. By removing a +1/+1 counter to ping Strong with Walking Ballista, you trigger Strong's enrage ability to pile on three new +1/+1 counters—netting you more counters than you spend and fueling infinite damage. Meanwhile, Strong's static ability ensures that the rad counters you accumulate will turn into lifegain rather than life loss on your upcoming turn.