Walk the Aeons + Seasons Past + Demonic Collusion

Walk the Aeons
Seasons Past
Demonic Collusion

Requires
Walk the Aeons must be in hand, or in the graveyard. Seasons Past must be in hand. Demonic Collusion must be in hand, or in the graveyard. Mana needed: 11 each turn
Steps
  1. Cast Seasons Past by paying 4, returning Demonic Collusion, Walk the Aeons, and any number of cards with different mana costs to your hand and putting Seasons Past on the bottom of your library.
  2. Cast Demonic Collusion by paying 3, putting Seasons Past from your library into your hand.
  3. Cast Walk the Aeons by paying 4, granting you an extra turn.
  4. Repeat each turn.
Results
Infinite turns.