Mikaeus, the Unhallowed, Shilgengar, Sire of Famine, and Slumbering Walker

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Slumbering Walker on the battlefield

Steps

1. Activate Shilgengar by sacrificing Slumbering Walker
2. When Slumbering Walker dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to its replacement effect
3. Resolve the Shilgengar ability Repeat

Results

• Infinite Blood tokens
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers