Okay so we played three games and I took them all down. The deck is fast and fun, but obviously we're relying on a single wincon and we need to be able to get it into play through Seance so it will just die to the right disruption cards. I faced down an Angelic Edict on my Seance in the third game, which was troubling because I couldn't get it back through Treasured Find, but luckily I had the second copy and was able to power out a win before another Edict ruined my chances. Without Seance, we have to hardcast the single Lab Maniac to win and I NEVER want to hardcast that thing.
This obviously isn't meant to be the optimal deck, but I think it's a ton of fun to run a deck like this where you only have one way to win the game. The whole "can I get there?" throughtout the whole game is exhilarating.
Doubling Season is a bit win-more, though, and only good with Seance so I may just play some
Masked Admirers in those slots. Any other suggestions for the Doubling Season slots? I may even play a single Spawning just as a defensive line, but I wouldn't play more than that. Two copies of Traumatic Visions is a thought as well, because four colors and it is some protection in the lategame. The deck tends to tap out, though, so I'm not sure this is the way to go. Hedron Crab has also been pretty important for the deck's speed, so I may even play a pair of Gravediggers to go get them back.