So after a glance at my pool I really wanted to go BR, but that was unrealistic. GW was better, but kinda eh. So I ended up playing UB, which I had never played in Sealed before. I can't be bothered to type up the whole pool, but my deck was:

1 x Exultant Cultist
1 x Docent of Perfection
1 x Curious Homunculus
1 x Enlightened Maniac
1 x Reckless Scholar
1 x Fogwalker
1 x Tattered Haunter
1 x Catalog
1 x Scour the Laboratory
1 x Displace
1 x Confirm Suspicions
1 x Fortune's Favor
1 x Sleep Paralysis
1 x Wailing Ghoul
1 x Ghoulcaller's Accomplice
1 x Rottenheart Ghoul
1 x Cryptbreaker
1 x Borrowed Malevolence
1 x Certain Death
1 x Whispers of Emrakul
1 x Ruthless Disposal
1 x Distended Mindbender
1 x Tamiyo's Journal
1 x Explosive Apparatus
8 x Island
8 x Swamp


Beat RW aggro 2:0 first round, then another RW aggro 2:1 in second. Made a really dumb misplay in the third round, completely overlooking the guy that taps to give a human +1/+1 and got steamrolled after that. Final round I beat a BR aggro deck 2:0. Did way better than I initially expected. Thoughts on individual cards:
Distended Mindbender is bonkers. Sacrificing a Rottenheart Ghoul to it on turn 5 was usually backbreaking.
I was really looking forward to Fortune's Favor, but I only drew it once all day and even then I had to pitch it to something.
1/3 for two mana is a great thing to have in this format. Both Wailing Ghoul and Fogwalker did serious work for me.

In retrospect I probably should've swapped out an Island for a Swamp. There was more than one occasion where I had to wait for the second swamp to emerge the Mindbender.

I think you should have just cut Whispers and probably displace for lands. Maybe keep one in and cut Tattered Hunter, which is a pure beat down card. You probably have enough draw to play 17 lands, but 16 is too few.

Curious Homunculus seems bad too... did you ever flip it?

Flipped it exactly once. The cost reduction on the reverse was very relevant that game. If I were to build the deck again, I'd probably rethink its inclusion, but it wasn't terrible.

Got the most worthless pile imaginable. Virtually no playable removal. My top creatures were all white (promo was Thalia and first rare was her Lancers, which was used to fetch her a couple times today) and I could almost have gone monowhite, but I splashed green to cut some chaff and gain some humans synergy and delirium enablers. My deck was GW humans-delirium. And it died pretty hard. Got flown over a lot.

The whole room cracked a lot of white. Three Giselas and a Bruma in a group of 7 players.

Attended the Pre-release for Eldritch Moon and uploaded a video to YouTube. I show all the cards I opened, the process in which I decide what cards to choose, and the final outcome. Take a look for yourself. I think the best card i got was a Tree of Perdition.

MTG - Eldritch Moon Pre-release Sealed Deck Assembly
https://youtu.be/FnFx6OL1weA