Progenitor Mimic + Returned Pastcaller + Capture of Jingzhou

Progenitor Mimic

Returned Pastcaller

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 Returned Pastcaller.
3. When the token Returned Pastcaller enters the battlefield, it triggers itself, returning Capture of Jingzhou from your graveyard to your hand.
4. Repeat.