Archaeomancer + Crucible of Worlds + Endless Sands + Time Warp

Archaeomancer

Crucible of Worlds

Endless Sands

Time Warp

How it works

1. Cast Time Warp by paying 3, taking an extra turn after this one.
2. Cast Archaeomancer by paying 2.
3. Archaeomancer enters the battlefield, returning Time Warp to your hand.
4. Activate Endless Sands' first ability by paying 2 and tapping it, exiling Archaeomancer.
5. Move to your next turn.
6. Cast Time Warp by paying 3, taking an extra turn after this one.
7. Activate Endless Sands' second ability by paying 4, tapping it, and sacrificing it, returning Archaeomancer to the battlefield.
8. Archaeomancer enters the battlefield, returning Time Warp to your hand.
9. Play Endless Sands from your graveyard.
10. Activate Endless Sands' first ability by paying 2 and tapping it, exiling Archaeomancer.
11. Repeat.