Mnemonic Wall + Followed Footsteps + Time Warp

Mnemonic Wall

Followed Footsteps

Time Warp

How it works

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