Progenitor Mimic + Scholar of the Ages + Walk the Aeons

Progenitor Mimic

Scholar of the Ages

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying its mana cost, taking an extra turn after this one.
2. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Scholar of the Ages.
3. When the token Scholar of the Ages enters the battlefield, it triggers itself, returning Walk the Aeons and up to one additional target instant or sorcery card from your graveyard to your hand.
4. Repeat.