Agatha's Soul Cauldron + Walking Ballista + Pest Mascot

Agatha's Soul Cauldron

Walking Ballista

Pest Mascot

How it works

1. Activate Pest Mascot by using Walking Ballista's ability by removing a +1/+1 counter from it, dealing 1 damage to any target and causing you to gain 1 life due to its lifelink.
2. Pest Mascot triggers, putting a +1/+1 counter on it.
3. Repeat.

This clever loop turns Walking Ballista and Pest Mascot into a self-sustaining engine, thanks to the behind-the-scenes fixing and counter-granting power of Agatha's Soul Cauldron. Once Agatha's Soul Cauldron banishes a creature with the necessary abilities—or grants Walking Ballista's counter-removal trick to Pest Mascot—removing a +1/+1 counter deals damage and gains life, which immediately triggers Pest Mascot to replace the counter it just lost. Because Agatha's Soul Cauldron also allows you to spend mana as though it were mana of any color, casting and setting up your pieces becomes remarkably flexible across multiple formats.