Requires

Triplicate Titan must be in exile (exiled by Mimic Vat). Clock of Omens must be on the battlefield. Mimic Vat must be on the battlefield. Ashnod's Altar must be on the battlefield. Mana needed:

Steps

1. Activate Mimic Vat by paying and tapping it, creating a token copy of Triplicate Titan with haste.
2. Activate Ashnod's Altar by sacrificing the Triplicate Titan token, adding .
3. The token Triplicate Titan dies, creating three 3/3 Golem artifact creature tokens.
4. Activate Clock of Omens by tapping two Golems, untapping Mimic Vat.
5. Activate Ashnod's Altar by sacrificing a Golem, adding .
6. Repeat.

Results