Darkheart Sliver, Gravecrawler, Prize Pig, and Xenograft

Prerequisites

• Darkheart Sliver on the battlefield
• Gravecrawler on the battlefield
• Prize Pig on the battlefield
• Xenograft on the battlefield
• You control at least one additional Zombie
• Prize Pig does not have summoning sickness
• "Sliver" chosen with Xenograft

Steps

1. Activate Gravecrawler by sacrificing itself, causing you to gain three life
2. Prize Pig triggers, putting three ribbon counters on it, then removing all ribbon counters on it and untapping it
3. Activate Prize Pig by tapping it, adding
4. Cast Gravecrawler from your graveyard by paying
5. Repeat

Results

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