Oathsworn Vampire, Phyrexian Altar, and Pitiless Plunderer

Prerequisites

• Oathsworn Vampire in the graveyard
• Phyrexian Altar on the battlefield
• Pitiless Plunderer on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Oathsworn Vampire, adding
2. When Oathsworn Vampire dies, Pitiless Plunderer triggers, creating a Treasure token
3. Activate the Treasure token by tapping and sacrificing it, adding
4. Cast Oathsworn Vampire from your graveyard by paying
5. Repeat

Results

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