Circuit Mender, Mortuary, Krark-Clan Ironworks, and Cloud Key

Prerequisites

• Circuit Mender on the battlefield
• Mortuary on the battlefield
• Krark-Clan Ironworks on the battlefield
• Cloud Key on the battlefield
• "Artifact" or "Creature" chosen with Cloud Key

Steps

1. Activate Krark-Clan Ironworks by sacrificing Circuit Mender, adding
2. When Circuit Mender dies, its second ability and Mortuary trigger
3. Resolve the Mortuary trigger, putting Circuit Mender on top of your library from your graveyard
4. Resolve the Circuit Mender trigger, causing you to draw Circuit Mender
5. Cast Circuit Mender by paying
6. When Circuit Mender enters the battlefield, its first ability triggers, causing you to gain two life
7. Repeat

Results

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