Mystic Sanctuary + Vedalken Mastermind + Time Stretch

Mystic Sanctuary

Vedalken Mastermind

Time Stretch

How it works

1. Cast Time Stretch by paying its mana cost, causing you to take two extra turns after this one.
2. Play Mystic Sanctuary.
3. When Mystic Sanctuary enters untapped, it triggers, putting Time Stretch from your graveyard onto the top of your library.
4. Move to your next turn, drawing Time Stretch during your draw step.
5. Activate Mystic Sanctuary by tapping it, adding .
6. Activate Vedalken Mastermind by paying and tapping it, returning Mystic Sanctuary from the battlefield to your hand.
7. Repeat during your second extra turn

This loop achieves infinite turns by recycling Time Stretch from your graveyard directly to the top of your library using Mystic Sanctuary's landfall-style entry trigger. Because Mystic Sanctuary enters untapped as long as you control three or more other Islands, it immediately secures your upcoming draw step for Time Stretch. To keep the engine running, Vedalken Mastermind uses its active ability to bounce Mystic Sanctuary back to your hand for just one mana, allowing you to replay it on your next turn and repeat the process indefinitely.