Conjurer's Bauble + River Song + Saheeli, the Sun's Brilliance + Walk the Aeons

Mana needed: {U}{R} plus enough mana to cast the extra turn spell each turn

UR identity

Commander legal

The 4 combo pieces

• Conjurer's Bauble
• River Song
• Saheeli, the Sun's Brilliance
• Walk the Aeons

How to execute it

1. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of Conjurer's Bauble.
2. Cast Walk the Aeons by paying its mana cost, causing you to take an extra turn after this one.
3. Activate the Conjurer's Bauble token by tapping and sacrificing it, putting Walk the Aeons onto the bottom of your library from your graveyard, and then causing you to draw Walk the Aeons from the bottom of your library due to River Song.
4. Repeat each turn.

What the combo produces

• Infinite turns
• Lock