Extravagant Replication + Returned Pastcaller + Temporal Manipulation

Extravagant Replication

Returned Pastcaller

Temporal Manipulation

How it works

1. Cast Temporal Manipulation by paying its mana cost, causing you to take an extra turn after this one.
2. Move to your next turn.
3. At the beginning of your upkeep, Extravagant Replication triggers, creating a token copy of Returned Pastcaller.
4. When the Returned Pastcaller token enters the battlefield, it triggers, returning Temporal Manipulation from your graveyard to your hand.
5. Repeat.