Kaya's Ghostform, Phyrexian Altar, and Greenwarden of Murasa

Prerequisites

• Kaya's Ghostform on the battlefield
• Phyrexian Altar on the battlefield
• Greenwarden of Murasa on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Greenwarden of Murasa, adding
2. When Greenwarden of Murasa dies, Kaya's Ghostform triggers, returning Greenwarden of Murasa from your graveyard to the battlefield
3. When Greenwarden of Murasa enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to your hand
4. Cast Kaya's Ghostform by paying , attaching it to Greenwarden of Murasa
5. Repeat

Results

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