River Song + Transplant Theorist + Walk the Aeons

River Song

Transplant Theorist

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying 4, causing you to take an extra turn after this one.
2. Activate Transplant Theorist by paying 2, causing you to put Walk the Aeons on the bottom of your library from your graveyard.
3. Move to your next turn, drawing Walk the Aeons from the bottom of your library due to River Song during your draw step.
4. Repeat.

By harnessing River Song's strange curse, your library's bottom becomes your true top deck, allowing you to seamlessly reclaim resources. Transplant Theorist provides the engine to fuel this loop by looting when artifacts enter and spending mana to tuck spells back where River Song can reach them. Finally, Walk the Aeons chains your days together indefinitely by taking extra turns, its buyback cost bypassed entirely as you continuously recycle it from the graveyard to the bottom of your library to keep the cycle spinning forever.