Zacama, Primal Calamity, Crystalline Crawler, and Sunbond

Prerequisites

• Zacama, Primal Calamity on the battlefield
• Crystalline Crawler on the battlefield
• Sunbond on the battlefield
• Sunbond attached to Crystalline Crawler
• available

Steps

1. Activate Zacama's third ability by paying , causing you to gain three life
2. Sunbond triggers, putting three +1/+1 counters on Crystalline Crawler
3. Activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding
4. Repeat

Results

• Infinite lifegain triggers
• Infinite lifegain