Archangel of Thune, Verdant Sun's Avatar, and Scurry Oak

Prerequisites

• Archangel of Thune on the battlefield
• Verdant Sun's Avatar on the battlefield
• Scurry Oak on the battlefield

Steps

1. Gain life
2. Archangel of Thune triggers, putting a +1/+1 counter on each creature you control
3. Scurry Oak triggers, creating a creature token
4. When the creature token enters the battlefield, Verdant Sun's Avatar triggers, causing you to gain 1 life
5. Repeat from step 2

Results

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