This deck aims to leverage the combo of Town, Town Priest, and Corruptor to win the game. Together, these three cards (one of which is your avatar) result in infinite spell cast/etb triggers. To turn this into a win, step one is to find Fenvale Muse. With Muse out and a River, we can use the infinite cast triggers to scry until whatever card we want is on top. In this case that will be either Teleport or Ring of Morrigan. After you've drawn the first card you put on top, execute the combo again to stack the other on top. Once you've drawn both, give an allied spellcaster the Ring, Teleport them to your opponent's home base, and let it rip. Ideally, you have some free or cheap draws lined up so you can pull this off in one turn. Wizard's Den, Wiccan Tools, Apex of Babel, Browse, Blink, Return to Nature, and Sisters of Avalon all can help you do this. Tithe, Overflow, Land Surveyor, and Kettletop Leprechaun are all to dig for Town and Rivers. Cards like Feign Death can help you stealth up the Muse before Teleporting.

Turn 4 is the most realistic target to execute a DD combo all in one turn, but you only need three sites to execute the DD combo (a River, a Town, and any earth site), so turn 3 is the theoretical minimum. With Ring, Teleport, Town Priest, Town, any A/E site and any Air site in your opener + first two draws, you can execute the combo on turn 3, but this requires near-perfect draws. Ring can be substituted for Fenvale Muse and Wiccan Tools for a little bit of leeway in draw requirements, but this is still highly unlikely. More realistic scenarios occur on turn 4. With Muse and the three required sites (River, Town, any earth site) in play on t4, any air site as your fourth site will allow Sisters of Avalon to function as one of your required draws, meaning you only need one of Wiccan Tools/Toolbox already in play. If Wizard's Den is your fourth site it can also function as one of your draws (or Apex of Babel if your earth site is Base of Babel). There are multiple distinct combinations of cards that will allow a t4 DD combo, multiple copies of all of the pieces, and Common Senses and Tooboxes to find them, so I think a t4 DD combo as an optimistic target is relatively reasonable. You don't even need to draw perfect in the first three turns, as there is time to cast a common sense on t2 or t3 if you're missing one or more pieces.