The Sixth Doctor + Romana II + Teferi, Who Slows the Sunset

Prerequisites

• You control a mana-producing land and/or artifact.
• You have not copied a spell using The Sixth Doctor's ability this turn.

Steps

1. 1Cast Teferi by paying .
2. 2The Sixth Doctor triggers, copying the Teferi spell, with the copy being nonlegendary.
3. 3Resolve both Teferi spells.
4. 4Activate a mana-producing land or artifact by tapping it, adding at least .
5. 5Activate Romana II by paying and tapping it, creating a copy of the Teferi token.
6. 6Activate a Teferi token's first loyalty ability by putting a loyalty counter on it, untapping Romana II, the mana-producing land or artifact and up to one other land or artifact, and causing you to gain 2 life.
7. 7Repeat from step 4.

Effects

• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana artifacts you control can produce
• Infinite mana lands you control can produce