Agatha's Soul Cauldron + Shay Cormac + Walking Ballista

WB identity

Commander legal

The 3 combo pieces

• Agatha's Soul Cauldron
• Shay Cormac
• Walking Ballista

What must be in place

Shay Cormac has at least one +1/+1 counter on it.
You have a way to give Shay Cormac deathtouch.

How to execute it

1. Give Shay Cormac deathtouch, if needed.
2. Activate Shay Cormac using Walking Ballista's second ability by removing a +1/+1 counter from it, targeting a creature an opponent controls.
3. Shay Cormac's first ability triggers, putting a bounty counter on the targeted creature.
4. Resolve the Shay Cormac ability from step 2, dealing 1 damage to the creature and killing it due to Shay Cormac's deathtouch.
5. When the creature dies, Shay Cormac's second ability triggers, putting two +1/+1 counters on it.
6. Repeat from step 2.
7. If the method giving Shay Cormac deathtouch lasts indefinitely, you may repeat this loop whenever a creature enters the battlefield under an opponent's control.

What the combo produces

• Destroy all creatures opponents control
• Destroy each creature that enters the battlefield under an opponent's control
• Lock