Bhaal, Lord of Murder, Crystalline Crawler, Gravecrawler, and Yahenni, Undying Partisan

Prerequisites

• Bhaal, Lord of Murder on the battlefield
• Crystalline Crawler on the battlefield
• Gravecrawler on the battlefield
• Yahenni, Undying Partisan on the battlefield
• You control at least one additional Zombie

Steps

1. Activate Yahenni by sacrificing Gravecrawler
2. When Gravecrawler dies, Bhaal triggers, putting a +1/+1 counter on Crystalline Crawler
3. Resolve the Yahenni ability, giving it indestructible until end of turn
4. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding
5. Cast Gravecrawler from your graveyard by paying
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count