Metalwork Colossus + Genesis Chamber + Mirrodin Besieged + Krark-Clan Ironworks
Metalwork Colossus
Genesis Chamber
Mirrodin Besieged
Krark-Clan Ironworks
Requires
Metalwork Colossus must be in hand.
Genesis Chamber must be on the battlefield.
Mirrodin Besieged must be on the battlefield.
Krark-Clan Ironworks must be on the battlefield.
Mana needed: 
(at most)
(at most)
Steps
- Cast Metalwork Colossus by paying at most .
- Mirrodin Besieged triggers, creating a 1/1 Myr artifact creature token.
- When Metalwork Colossus enters the battlefield, Genesis Chamber triggers, creating a 1/1 Myr artifact creature token.
- Activate Krark-Clan Ironworks by sacrificing Metalwork Colossus, adding .
- Activate Metalwork Colossus by sacrificing the two Myrs, returning it from your graveyard to your hand.
- Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite storm count.
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