Requires

Bosh, Iron Golem must be in the command zone. Genesis Chamber must be on the battlefield. Mycosynth Golem must be on the battlefield. Sculpting Steel must be on the battlefield. Ashnod's Altar must be on the battlefield. Bosh, Iron Golem must be your commander. You are able to cast Bosh for due to Mycosynth Golem.

Steps

1. Cast Bosh from the command zone by paying due to Mycosynth Golem.
2. When Bosh enters the battlefield, Sculpting Steel and Genesis Chamber trigger, creating two 1/1 Myr artifact creature tokens.
3. Activate Ashnod's Altar by sacrificing Bosh, adding .
4. Choose to return Bosh to the command zone from your graveyard.
5. Repeat.

Results