Szarel, Genesis Shepherd, Crystalline Crawler, Shilgengar, Sire of Famine, and Bloodsoaked Champion

Prerequisites

• Szarel, Genesis Shepherd on the battlefield
• Crystalline Crawler on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Bloodsoaked Champion in the graveyard

Steps

1. Activate Bloodsoaked Champion by paying , returning it from your graveyard to the battlefield
2. Activate Shilgengar by sacrificing Bloodsoaked Champion
3. When Bloodsoaked Champion is sacrificed, Szarel triggers, putting a number of +1/+1 counters equal to Szarel's power on Crystalline Crawler
4. Resolve the Shilgengar ability
5. Activate Crystalline Crawler twice by removing two +1/+1 counters from it, adding
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite self-discard triggers
• Infinite draw triggers
• Infinite +1/+1 counters
• Infinite rummaging
• Infinite Blood tokens