Mazzy, Truesword Paladin, Phyrexian Altar, Gift of Immortality, and Drowner of Hope

Prerequisites

• Mazzy, Truesword Paladin on the battlefield
• Phyrexian Altar on the battlefield
• Gift of Immortality on the battlefield
• Drowner of Hope on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Drowner of Hope, adding
2. When Drowner of Hope dies, Mazzy's second ability and Gift of Immortality trigger
3. Resolve the Mazzy trigger, exiling Gift of Immortality with the ability to cast it until end of your next turn
4. Resolve the Gift of Immortality trigger, returning Drowner of Hope from your graveyard to the battlefield
5. When Drowner of Hope enters, it triggers, creating two creature tokens
6. Activate two creature tokens by sacrificing them, adding
7. Cast Gift of Immortality from exile by paying , attaching it to Drowner of Hope
8. Repeat

Results

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