Metalwork Colossus, Genesis Chamber, Mirrodin Besieged, and Krark-Clan Ironworks

Prerequisites

• Metalwork Colossus in hand
• Genesis Chamber on the battlefield
• Mirrodin Besieged on the battlefield
• Krark-Clan Ironworks on the battlefield
• You conrol noncreature artifacts with a total mana value of 10 or greater
• "Mirran" chosen with Mirrodin Besieged
• (at most) available

Steps

1. Cast Metalwork Colossus by paying at most
2. Mirrodin Besieged triggers, creating a 1/1 Myr artifact creature token
3. When Metalwork Colossus enters the battlefield, Genesis Chamber triggers, creating a 1/1 Myr artifact creature token
4. Activate Krark-Clan Ironworks by sacrificing Metalwork Colossus, adding
5. Activate Metalwork Colossus by sacrificing the two Myrs, returning it from your graveyard to your hand
6. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count