Nim Deathmantle, Krark-Clan Ironworks, and Magic Pot

Prerequisites

• Nim Deathmantle on the battlefield
• Krark-Clan Ironworks on the battlefield
• Magic Pot on the battlefield

Steps

1. Activate Krark-Clan Ironworks by sacrificing Magic Pot, adding
2. When Magic Pot dies, it and Nim Deathmantle trigger
3. Resolve the Magic Pot trigger, creating a Treasure token
4. Activate Krark-Clan Ironworks by sacrificing the Treasure, adding
5. Resolve the Nim Deathmantle trigger, causing you to pay to return the creature from your graveyard to the battlefield, and attach Nim Deathmantle to it
6. Repeat

Results

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