River Song, Conjurer's Bauble, Salvaging Station, and Time Stretch

Prerequisites

• River Song on the battlefield
• Conjurer's Bauble on the battlefield or in the graveyard
• Salvaging Station on the battlefield
• Time Stretch in hand

Steps

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 Stretch by paying its mana cost, causing you to take two extra turns after this one
3. Activate Conjurer's Bauble by tapping and sacrificing it, putting Time Stretch onto the bottom of your library from your graveyard, and then causing you to draw Time Stretch from the bottom of your library due to River Song
4. Repeat during your second extra turn

Results

• Infinite turns