Extravagant Replication + Temporal Manipulation + Donnie & April, Adorkable Duo

Extravagant Replication

Temporal Manipulation

Donnie & April, Adorkable Duo

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 Donnie & April.
4. Put the Donnie & April token into your graveyard due to the legend rule.
5. When the Donnie & April token enters the battlefield, it triggers, returning Temporal Manipulation from your graveyard to your hand.
6. Repeat.