***TRIALS RESPONSE***It seems to me the "theme" of the deck can be summed up as "apply neurotoxin asap then use rainbow control to stall until the poison kills."
Neurotoxin is often a fairly slow victory condition, so you're going to want long-term stalling power otherwise you risk running out of Control before your opponent runs out of health. Much of the control currently included in the deck is more "short-term" control, in that it slows your opponent down cheaply but only temporarily. Reverse Time, Freeze and BB are great in a fast deck, where they can disrupt your opponent just long enough for you to rush them, but I don't think they shine as much in a slow deck like this one. I've posted an alternate build below, along with my reasoning behind the specific changes:
-1 blessing, +1 momentum: while the blessing is nice in that it uses a different quanta type than the other buffs, it requires 3 light unupped, which means you need two supernovas before you can cast it. Imo our priority is getting out that first buffed dune, and momentum is easier to get out quickly.
-2 nightmare, +1 vamp stiletto: Nightmare does combo nicely with Reverse Time, but that combo still feels too short term for my tastes. The vamp dagger offers a more long lasting solution.
-4 Reverse Time, -5 Entropy Pends, +3 Antimatter, +5 Amethyst Towers: Reverse Time is a very versatile card, and it forces the opponent to re-play the creature and accrue more neurotoxin, but I still feel that we'd be better served with CC that lasts longer. Antimatter is a more permanent solution, which also gives us nice healing. A little healing goes a long way when you've also got CC to weaken their offense. Healing puts time on your side.
-1 Skull Shield, +1 Wings: I'm not 100% sure on this one. Wings is generally stronger imo, but it could end up blocking our Antimattered foes, so fog or skull could be argued for.
-2 Pandemonium: Pandes can definitely come in handy, but I think AM is even stronger in this case, and we need to cut the deck size down a bit in order to keep it as consistent as possible.
-1 Freeze, -1 Basilisk Blood, +1 Lightning: trade temporary, or "soft" CC for a more permanent form of control, and cut the deck size down a little further.
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It might be worth testing to see if you could get away with only bringing 4 each of the dunes/momentums, once you're only using a 30 card deck. Alternately you could add back in some of the CC (probably pandes, and/or another rage pot) to increase the deck size a bit if your having deckout problems.