Requires

Safana, Calimport Cutthroat must be on the battlefield. Clock of Omens must be on the battlefield. Lithoform Engine must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Mana needed:

Steps

1. At the beginning of your end step, Safana triggers.
2. Holding priority, activate Lithoform Engine's first ability by paying and tapping it, copying Safana's ability.
3. Resolve the copy of Safana's ability, creating three Treasure tokens.
4. Activate Clock of Omens by tapping two Treasure tokens, untapping Lithoform Engine.
5. Activate Krark-Clan Ironworks by sacrificing a Treasure token, adding .
6. Repeat from step 2.

Results