Invisible Woman, Sue Storm, Light of Promise, and Trostani, Selesnya's Voice

Prerequisites

• Invisible Woman, Sue Storm on the battlefield
• Light of Promise on the battlefield
• Trostani, Selesnya's Voice on the battlefield

Steps

1. Gain life
2. The other Hero triggers, putting a +1/+1 counter on it Invisible Woman triggers, creating a creature token
3. When the creature token enters the battlefield, Trostani triggers, causing you to gain 4 life
4. Repeat from step 2

Results

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