Ran into someone tonight using 2 Valks and a Death Talon Whelpguard. I think I got like 5 straight wins against this team, even though they were extremely lucky most of the time and were able to get my last pet down to a nub as their Valks whimpered off after their Undead round. Using 2 Valks is just silly, since you can't stack Haunt, and Unholy Ascension is only worth anything after the Undead round starts.
I managed to Blinding Poison as Ascension was cast...so that missed...lol. They did, however, get a cheesy bug to go in their favor. After I killed a Valk one time, I used Blinding Poison during the Undead round, and he used Shadow Slash...and it HIT...not only did it hit, it CRIT my Death Adder. That one was like "If this happens ever again, I'm sending Blizz one nasty little e-mail or Bug Report".