Archangel of Thune, Scurry Oak, Leonin Elder, and Biotransference

Prerequisites

• Archangel of Thune on the battlefield
• Scurry Oak on the battlefield
• Leonin Elder on the battlefield
• Biotransference on the battlefield

Steps

1. Archangel of Thune triggers, putting a +1/+1 counter on each creature you control
2. Archangel of Thune triggers, putting a +1/+1 counter on Scurry Oak
3. Scurry Oak triggers, creating an artifact creature token
4. Leonin Elder triggers, causing you to gain 1 life
5. Repeat from step 2

Results

• Infinite ETB
• Infinite lifegain triggers
• Infinite lifegain
• Infinite tokens
• Infinite +1/+1 counters