Ashnod the Uncaring, Apprentice Necromancer, and Blood Pet

Prerequisites

• Ashnod the Uncaring on the battlefield
• Apprentice Necromancer on the battlefield
• Blood Pet on the battlefield
• Apprentice Necromancer does not have summoning sickness

Steps

1. Activate Blood Pet by sacrificing it, adding
2. Activate Apprentice Necromancer by paying , tapping and sacrificing it, targeting Blood Pet
3. Ashnod triggers, copying Apprentice Necromancer's ability, targeting Apprentice Necromancer
4. Resolve both Apprentice Necromancer abilities, returning Apprentice Necromancer and Blood Pet from your graveyard to the battlefield, and giving them haste until end of turn
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers