Teferi, Who Slows the Sunset, and Lithoform Engine

Prerequisites

• Teferi, Who Slows the Sunset on the battlefield
• Lithoform Engine on the battlefield
• You control a creature and/or a land that can tap to produce

Steps

1. Activate Teferi's first ability by putting a loyalty counter on it
2. Holding priority, activate the creature and/or land by tapping it, adding at least
3. Activate Lithoform Engine's first ability by paying and tapping it, copying Teferi's ability
4. Resolve the copy of Teferi's ability, untapping Lithoform Engine and the creature and/or land that can produce at least , and causing you to gain two life
5. Repeat from step 2

Results

• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana creatures you control can produce
• Infinite mana lands you control can produce
• Infinite untap of creatures you control
• Infinite untap of lands you control