Oathsworn Vampire, Phyrexian Altar, and Heartless Summoning

Prerequisites

• Oathsworn Vampire on the battlefield
• Phyrexian Altar on the battlefield
• Heartless Summoning on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Oathsworn Vampire, adding
2. Cast Oathsworn Vampire from your graveyard by paying
3. Repeat

Results

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