Requires

Phantom Steed must be on the battlefield. Capture of Jingzhou must be in hand. Archaeomancer must be in exile (exiled by Phantom Steed). An opponent can not block Phantom Steed. Mana needed:

Steps

1. Cast Capture of Jingzhou, taking an extra turn after this one.
2. Attack with Phantom Steed.
3. Phantom Steed triggers, creating a token copy of Archaeomancer that is tapped and attacking.
4. Archaeomancer enters, returning Capture of Jingzhou from your graveyard to your hand.
5. Pass the turn.
6. Repeat.

Results