Valentin, Dean of the Vein // Lisette, Dean of the Root, Spike Feeder, and Crystalline Crawler

Prerequisites

• Valentin, Dean of the Vein // Lisette, Dean of the Root on the battlefield
• Spike Feeder on the battlefield
• Crystalline Crawler on the battlefield
• Dean of the Root
• Spike Feeder has at least two +1/+1 counters on it
• available

Steps

1. Activate Spike Feeder's second ability by removing a +1/+1 counter from it, causing you to gain two life
2. Lisette triggers, causing you to pay to put a +1/+1 counter on each creature you control
3. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding
4. Repeat

Results

• Infinite +1/+1 counters on all creatures you control except Crystalline Crawler
• Infinite lifegain
• Infinite lifegain triggers