Narcomoeba, Mortuary, Selhoff Occultist, and Bloodthrone Vampire

Prerequisites

• Narcomoeba on the battlefield
• Mortuary on the battlefield
• Selhoff Occultist on the battlefield
• Bloodthrone Vampire on the battlefield

Steps

1. Activate Bloodthrone Vampire by sacrificing Narcomoeba
2. When Narcomoeba dies, Selhoff Occultist and Mortuary trigger
3. Resolve the Mortuary trigger, putting Narcomoeba from your graveyard on top of your library
4. Resolve the Selhoff Occultist trigger, causing you to mill Narcomoeba from the top of your library
5. Narcomoeba triggers, putting it from your graveyard onto the battlefield
6. Resolve the Bloodthrone Vampire ability from step 1 Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinitely large creature until end of turn