Spike Feeder, and Archangel of Thune

Prerequisites

• Spike Feeder on the battlefield
• Archangel of Thune on the battlefield
• Spike Feeder has at least two +1/+1 counters on it

Steps

1. Remove a +1/+1 counter from Spike Feeder to gain 1 life
2. Archangel of Thune triggers, putting a +1/+1 counter on each creature you control, including Spike Feeder
3. Repeat for infinite life and infinite +1/+1 counters on all creatures you control, other than Spike Feeder

Results

• Infinite +1/+1 counters on all creatures you control, other than Spike Feeder
• Infinite lifegain
• Infinite lifegain triggers