Metalwork Colossus, Mirrodin Besieged, Pitiless Plunderer, and Krark-Clan Ironworks

Prerequisites

• Metalwork Colossus in hand
• Mirrodin Besieged on the battlefield
• Pitiless Plunderer 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. Activate Krark-Clan Ironworks by sacrificing Metalwork Colossus, adding
4. When Metalwork Colossus dies, Pitiless Plunderer triggers, creating a Treasure token
5. Activate Metalwork Colossus by sacrificing the Treasure and Myr, 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