Progenitor Mimic + Vampire Charmseeker + Capture of Jingzhou

Progenitor Mimic

Vampire Charmseeker

Capture of Jingzhou

How it works

1. Cast Capture of Jingzhou by paying its mana cost, taking an extra turn after this one.
2. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Vampire Charmseeker.
3. When the token Vampire Charmseeker enters the battlefield, it triggers itself, returning Capture of Jingzhou from your graveyard to your hand.
4. Repeat.