Teferi, Temporal Archmage + Lithoform Engine

Prerequisites

• You control at least three lands.

Steps

1. 1Activate Teferi, Temporal Archmage's second ability by removing a loyalty counter from it.
2. 2In resopnse, activate Lithoform Engine's first ability by paying and tapping it, copying Teferi's activated ability.
3. 3Let the copied ability resolve, untapping three lands and Lithoform Engine.
4. 4Activate those lands by tapping them, adding at least .
5. 5Repeat from step 2.
6. 6Once you have infinite mana, you may untap any permanents in step 3.

Effects

• Infinite mana lands you control can produce
• Infinite mana permanents you control can produce