Ghostly Flicker + Mystic Sanctuary + Returned Pastcaller + Time Walk

Ghostly Flicker

Mystic Sanctuary

Returned Pastcaller

Time Walk

How it works

1. Activate Mystic Sanctuary by tapping it, adding .
2. Cast Time Walk by paying its mana cost, causing you to take an extra turn after this one.
3. Cast Ghostly Flicker by paying 2, blinking Mystic Sanctuary and Returned Pastcaller.
4. When Returned Pastcaller and Mystic Sanctuary enter the battlefield, they trigger.
5. Resolve the Returned Pastcaller trigger, returning Ghostly Flicker from your graveyard to your hand.
6. Resolve the Mystic Sanctuary trigger, putting Time Walk from your graveyard onto the top of your library.
7. Move to your next turn, drawing Time Walk during your draw step.
8. Repeat.

This Vintage-legal combo achieves infinite turns by establishing a recursive loop between your graveyard, hand, and library using Ghostly Flicker to constantly reset your enablers. By blinking both Mystic Sanctuary and Returned Pastcaller simultaneously, you trigger their entering-the-battlefield abilities to put Time Walk on top of your library and return Ghostly Flicker to your hand respectively. Drawing Time Walk naturally on your extra turn keeps the engine fueled indefinitely, locking the opponent out of the game entirely.