Agatha's Soul Cauldron + Blood Researcher + Walking Ballista

BG identity

Commander legal

The 3 combo pieces

• Agatha's Soul Cauldron
• Blood Researcher
• Walking Ballista

How to execute it

1. Activate Blood Researcher 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. Blood Researcher triggers, putting a +1/+1 counter on it.
3. Repeat.

What the combo produces

• Infinite damage
• Infinite lifegain
• Infinite lifegain triggers