Nim Deathmantle, Ashnod's Altar, and Kiora of Fire and Ashes

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Kiora of Fire and Ashes on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Kiora of Fire and Ashes, adding
2. When Kiora of Fire and Ashes dies, Nim Deathmantle triggers, causing you to pay to return Kiora of Fire and Ashes from your graveyard to the battlefield and attach Nim Deathmantle to it
3. When Kiora of Fire and Ashes enters, it triggers, creating a creature token
4. Activate Ashnod's Altar by sacrificing a creature token, adding
5. Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers