Progenitor Mimic + Vampire Charmseeker + Temporal Manipulation

Progenitor Mimic

Vampire Charmseeker

Temporal Manipulation

How it works

1. Cast Temporal Manipulation 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 Temporal Manipulation from your graveyard to your hand.
4. Repeat.