Ghostly Flicker + Mystic Sanctuary + Time Stretch + Revolutionist

Ghostly Flicker

Mystic Sanctuary

Time Stretch

Revolutionist

How it works

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

This brilliant loop takes advantage of perpetual recursion to lock down the game with infinite turns. You start by casting Time Stretch to begin taking extra turns, during which Mystic Sanctuary can tap for blue mana and trigger its ability to place Time Stretch right back on top of your library. To keep the engine running, Ghostly Flicker comes in to reset your board, and Revolutionist is there to pull Ghostly Flicker straight back out of your graveyard the moment it blinks into play.