Lithoform Engine + Tezzeret the Seeker + Gilded Lotus

Prerequisites

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Steps

1. 1Activate Tezzeret the Seeker's first ability by putting a loyalty counter on it.
2. 2Holding priority, activate Gilded Lotus by tapping it, adding three mana of any color.
3. 3Activate Lithoform Engine's first ability by paying and tapping it, copying Tezzeret the Seeker's ability, targeting Lithoform Engine and Gilded Lotus.
4. 4Resolve the copy of Tezzeret the Seeker's ability, untapping Gilded Lotus and Lithoform Engine.
5. 5Repeat from step 2.

Effects

• Infinite colored mana
• Infinite mana artifacts you control can produce
• Infinite untap of artifacts you control