Archaeomancer + Cache Raiders + Walk the Aeons

Archaeomancer

Cache Raiders

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying 4, taking an extra turn after this one.
2. Cast Archaeomancer by paying 2.
3. Archaeomancer enters the battlefield, returning Walk the Aeons to your hand.
4. Move to your next turn.
5. At the beginning of your next upkeep, Cache Raiders triggers, returning Archaeomancer to your hand.
6. Move to your next turn.
7. Repeat.