Nim Deathmantle, Krark-Clan Ironworks, and Myr Battlesphere

Prerequisites

• Nim Deathmantle on the battlefield
• Krark-Clan Ironworks on the battlefield
• Myr Battlesphere on the battlefield
• available

Steps

1. Activate Krark-Clan Ironworks by sacrificing Myr Battlesphere, adding
2. When Myr Battlesphere dies, Nim Deathmantle triggers, causing you to pay to return Myr Battlesphere from your graveyard to the battlefield and attach Nim Deathmantle to it
3. When Myr Battlesphere enters, it triggers, creating four artifact creature tokens
4. Activate Krark-Clan Ironworks by sacrificing a creature token, adding
5. Repeat

Results

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