This vintage-legal loop achieves infinite turns by cycling the same powerful spells back and forth between your library, graveyard, and hand. Each cycle begins with Seasons Past doing the heavy lifting by returning your other key spells from the graveyard while conveniently tucking itself away onto the bottom of your library. From there, you cast Final Parting to easily tutor Seasons Past right back out of your library and into your hand, bypassing the need to draw it naturally. Finally, you cast Time Walk to claim an extra turn, untap, and repeat the whole sequence again until your opponent is thoroughly locked out of the game.