Ghostly Flicker + Mystic Sanctuary + Time Stretch + Shipwreck Dowser

Ghostly Flicker

Mystic Sanctuary

Time Stretch

Shipwreck Dowser

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 Shipwreck Dowser.
6. When Shipwreck Dowser and Mystic Sanctuary enter the battlefield, they trigger.
7. Resolve the Shipwreck Dowser 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.