River Song + Conjurer's Bauble + Salvaging Station + Time Walk

River Song

Conjurer's Bauble

Salvaging Station

Time Walk

How it works

1. If Conjurer's Bauble is in your graveyard, activate Salvaging Station by tapping it, returning Conjurer's Bauble from your graveyard to the battlefield.
2. Cast Time Walk by paying its mana cost, causing you to take an extra turn after this one.
3. Activate Conjurer's Bauble by tapping and sacrificing it, putting Time Walk onto the bottom of your library from your graveyard, and then causing you to draw Time Walk from the bottom of your library due to River Song.
4. Repeat each turn.