Roon of the Hidden Realm + Archaeomancer + Temporal Manipulation

Roon of the Hidden Realm

Archaeomancer

Temporal Manipulation

How it works

1. Cast Temporal Manipulation by paying 3, causing you to take an extra turn after this one.
2. Activate Roon by paying 2 and tapping it, exiling Archaeomancer until the beginning of your end step.
3. At the beginning of your end step, Roon triggers, returning Archaeomancer from exile to the battlefield.
4. Archaeomancer enters the battlefield, putting Temporal Manipulation into your hand from your graveyard.
5. Repeat each turn.