Nim Deathmantle, Cathodion, and Krark-Clan Ironworks

Prerequisites

• Nim Deathmantle on the battlefield
• Cathodion on the battlefield
• Krark-Clan Ironworks on the battlefield

Steps

1. Activate Krark-Clan Ironworks by sacrificing Cathodion, adding
2. Cathodion and Nim Deathmantle trigger
3. Resolve the Cathodion trigger, adding
4. Resolve the Nim Deathmantle trigger, causing you to pay to return Cathodion from your graveyard to the battlefield, and then attach Nim Deathmantle to it
5. Repeat

Results

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