Agatha's Soul Cauldron + Emmara, Soul of the Accord + North Pole Patrol

Agatha's Soul Cauldron

Emmara, Soul of the Accord

North Pole Patrol

How it works

1. Activate a creature using North Pole Patrol's ability by tapping it, untapping Emmara.
2. Activate Emmara using North Pole Patrol's ability by tapping it.
3. Emmara triggers, creating a 1/1 Soldier creature token.
4. Resolve the Emmara ability from step 2, untapping another creature.
5. Repeat.

This clever loop turns North Pole Patrol and Emmara, Soul of the Accord into a mutual untap engine, fueled entirely by Agatha's Soul Cauldron granting North Pole Patrol's tap-to-untap ability to Emmara. As you continuously tap and untap Emmara, her triggered ability responds by flooding the board with an endless army of Soldier creature tokens.