Kairi, the Swirling Sky, Supernatural Stamina, and Phyrexian Altar

Prerequisites

• Kairi, the Swirling Sky on the battlefield
• Supernatural Stamina in hand
• Phyrexian Altar on the battlefield
• available

Steps

1. Cast Supernatural Stamina by paying , targeting Kairi
2. Activate Phyrexian Altar by sacrificing Kairi, adding
3. Kairi dies, triggering its ability granted by Supernatural Stamina and its other ability
4. Resolve the first Kairi trigger, returning it from your graveyard to the battlefield tapped
5. Resolve the second Kairi trigger, causing you to mill six cards and return Supernatural Stamina from your graveyard to your hand
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count