Strength of Will + Walking Ballista + Caradora, Heart of Alacria

Strength of Will

Walking Ballista

Caradora, Heart of Alacria

How it works

1. Cast Strength of Will by paying 1, targeting Walking Ballista.
2. Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to it.
3. Walking Ballista triggers, putting two +1/+1 counters on it due to Caradora.
4. Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to any target.
5. Repeat from step 2.

This clever loop transforms Walking Ballista into a self-sustaining engine by utilizing Strength of Will to grant it indestructible and a damage-triggered growth ability. Thanks to Caradora, Heart of Alacria's passive replacement effect, every instance of damage dealt to Walking Ballista results in a net gain of counters rather than just breaking even. By repeatedly shooting itself and letting the increased counters pile up, you can generate an arbitrarily large number of +1/+1 counters before finally turning the loaded Walking Ballista's pings away to deal infinite damage to any target.