We continue mulling through the newly released, complete Dark Ascension visual spoiler here with card number 84 of 158:
I have to admit that I wasn't expecting a white curse. I wasn't expecting any non-black, non-red, or non-blue curse for that matter. And they introduce a new white curse in the form of a one-sided, more expensive version of Arcane Laboratory. I like it. This is the anti-combo card that combo players fear. This is the anti-tempo card that can be included in your own tempo deck that tips the overall tempo of the game in your favor. And for those paying attention, this is the card that prevents your opponents from transforming your werewolves back into humans...!
If you curse your opponent with exhaustion, they'll be unable to cast two spells a turn, therefore unable to transform the werewolves. Perfect. I think this is a very powerful card.
I would get my best green werewolves and slap together the best white/green werewolf based deck possible. I'd save the 4cc slot exclusively for Curse of Exhaustion and make sure there were plenty of 1cc, 2cc, and 3cc creatures, including the likes of Wolfbitten Captive, Gastalf Shepherd, Scorned Villager, and Mayor of Avabruck. But I'd also include Lambholt Elder, of all things.
If you look back at my original assessment of Lambholt Elder, you'll notice that I'm really down on it. I concluded that I'd rather take Villagers of Estwald in almost any situation. But in this case, if the game is gaining the tempo advantage over your opponent, the extra card draw from the elder is exactly you need--especially if your elders will never transform back once the curse is in play.
Throw in a handful of efficient green and white instants (so you can cast as many spells as possible without transforming your own werewolves) and you might end up with a very competitive deck.