All Will Be One, Ajani's Pridemate, and Exquisite Blood

Prerequisites

• All Will Be One on the battlefield
• Ajani's Pridemate on the battlefield
• Exquisite Blood on the battlefield

Steps

1. Gain life
2. Ajani's Pridemate triggers, putting a +1/+1 counter on it All Will Be One triggers, dealing 1 damage to an opponent
3. Exquisite Blood triggers, causing you to gain 1 life
4. Repeat from step 2

Results

• Infinite +1/+1 counters on a creature
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss