UR has always been my favorite color-pairing, so I'm always grabbing at new combo decks in those colors to try out. I played Pyromancer's Swath in Modern before it got gutted, but my buddies didn't think it was very fun to play against (truth be told, it really wasn't, combo is pretty lame to play in casual), so I was looking for something new. Mindmoil has always had a special place in my heart as a wacky, izzet-y enchantment begging to be broken, as well as Archmage Ascension, and a friend of mine told me he saw the two played together in a deck once with lots of instant-speed draw, where it set up the combo and then stormed out, cycling through the whole deck a bunch of times. I liked it, so I put this together before our play-sesh last night, and it went rather well!
The obvious goal is to have Ascension down by turn three, and then use your instant-speed draw and sorcery-speed draw to guarantee a quest counter every turn. Then, you move on to dropping Mindmoil, and from there on, you get a quest counter if you cast ONE spell during pretty much ANY turn. With max counters on Ascension and Moil out, the fun starts. Off of anything, you tutor up a hand's worth of cards! So, just grab whatever you want, cast cheap cantrips, and load up enough to chunk their library off of with a couple Brain Freezes. Then, you can Psychic Spiral after doing this a couple of times to finish their library. It's a pretty janky combo at best, but Mindmoil makes the whole game crazy, and it was satisfying to combo off.
As a last note, I could never find a deck where Long-Term Plans really was nice, but I actually like it a lot in this deck because of the interaction with Ponder and Preordain as a cheap in-color way to tutor for the combo pieces.
I put Ignite Memories as an alternate win-con in there, ideally popping a few stormed spells off with the combo in place, Spiraling it all back, rinsing, and repeating. Aetherize is to stall against decks aiming to overrun you if they catch wind of your schemes. Spell Pierce I think is a good fit for this deck, as a one mana general response when people try to stop the combo, and Otherworld Atlas is in there because I like it a lot as an enabler for Ascension, but I'm not sure if I like it being symmetrical.
Overall, it's a quickly-put-together casual combo deck that I want to tune up and keep playing, because everyone seemed to like how wacky it was while not winning on turn 3 or less. Any suggestions? I think the sideboard needs serious work, but I don't know what to include. I know Howling Mine and its kin are free quest counters for Ascension, but I'd like to keep the draw asymmetrical.
Conescrated Sphinx would be absolutely dumb as a late-game win-more card, but it's a little expensive and I don't own it yet. I also reaaaaaally like the idea of some Wheel of Fate-type cards for post-combo shenanigans. Reforge The Soul seems good, even if the miracle effect will almost never happen post-combo, since you would have to know it's there and choose not to tutor.
This isn't meant to be massively competitive and unbeatable, but a fun, consistent deck. As always, cheers!