Requires

Mishra, Eminent One 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 combat phase, Mishra triggers, targeting any artifact.
2. Holding priority, activate Lithoform Engine's first ability by paying and tapping it, copying Mishra's ability, targeting Lithoform Engine.
3. Resolve the copy of Mishra's ability, creating a token copy of Lithoform Engine that is a 4/4 creature with haste named Mishra's Warform in addition to its other types.
4. Activate Mishra's Warform's first ability by paying , and tapping it, copying Mishra's ability, targeting Lithoform Engine.
5. Holding priority, activate Krark-Clan Ironworks by sacrificing Mishra's Warform, adding .
6. Repeat from step 3.

Results