Verdant Sun's Avatar, Scurry Oak, and The Destined White Mage

Prerequisites

• Verdant Sun's Avatar on the battlefield
• Scurry Oak on the battlefield
• The Destined White Mage on the battlefield

Steps

1. Gain life
2. The Destined White Mage triggers, putting a +1/+1 counter on Scurry Oak
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 +1/+1 counters on a creature
• Infinite ETB
• Infinite creature tokens
• Infinite lifegain
• Infinite lifegain triggers