Archaeomancer + Followed Footsteps + Time Walk

Archaeomancer

Followed Footsteps

Time Walk

How it works

1. Cast Time Walk by paying 1, 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 Archaeomancer.
4. Archaeomancer enters the battlefield, returning Time Walk to your hand.
5. Repeat.