@moehawkman- You are absolutely right, but it's not only hard for newer players. I'm on Mission 224 and I can't beat the damn thing. This event is a showcase of how bad the pay to win factor has gotten. Hell, I'm not even sure that a deck full of the most overpowered promo cards (Usial, Ospry) could win.
I find it funny that using an Acid Spewer in place of a Vampire gives you the exact same stats and skills plus Flurry 1 in exchange for being 2 turns slower. I also realized that a Hunter is just an Artemis Tank with Strike 1. Somehow this accounts for the Hunter being gold and the Artemis tank being black. Talk about balance issues.