Eternal Witness + Followed Footsteps + Time Warp

Eternal Witness

Followed Footsteps

Time Warp

How it works

1. Cast Time Warp by paying 3, taking an extra turn after this one.
2. Move to your next turn.
3. At the beginning of your upkeep, Followed Footsteps triggers, creating a copy of Eternal Witness.
4. Eternal Witness enters the battlefield, returning Time Warp from your graveyard to your hand.
5. Repeat.