Cast Temporal Manipulation by paying its mana cost, causing you to take an extra turn after this one.
Cast Ghostly Flicker by paying 2, blinking Mystic Sanctuary and Vampire Charmseeker.
When Vampire Charmseeker and Mystic Sanctuary enter the battlefield, they trigger.
Resolve the Vampire Charmseeker trigger, returning Ghostly Flicker from your graveyard to your hand.
Resolve the Mystic Sanctuary trigger, putting Temporal Manipulation from your graveyard onto the top of your library.
Move to your next turn, drawing Temporal Manipulation during your draw step.
Repeat.
This elegant loop grants you infinite turns by endlessly recycling your win conditions through the graveyard. Once you have enough Islands to ensure Mystic Sanctuary enters untapped, its landfall-like trigger lets you stack Temporal Manipulation on top of your library just in time for your next draw step. Meanwhile, Ghostly Flicker resets both Mystic Sanctuary and Vampire Charmseeker, allowing the Charmseeker to pull Ghostly Flicker right back out of the graveyard to hand. Together, these pieces lock down the game by guaranteeing you take every turn from here on out.