I also think you want 1-2 other creatures so he can't focus them and the curses. Make him try to dispel/remove the curses and die to the creatures or try to kill the creatures and loose to the curses.
What creatures do you have in mind? I stock this book with three blood demons, which has worked very well, and in truth, I have seldom even needed to cast. I've had two of them out at the most, and that was a game where I intentionally avoided the rush just to get the creatures out for fun. Or do you suggest, I stick with Blood demons and take the risk with his anti-demon tricks? Granted they are flying so that would create a problem for him.
Also, this guy loves his healing spells. I mean like ridiculously loves them. After our matches Wednesday night when everyone indicated they wanted to see this particular match-up, he made a point to taunt me with the fact he has spells that heal even with finite life in play. I can't recall what those spells are off the top of my head, but it gave me cause for concern. Though, if I focus him with fire spell after fire spell, he would be wasting actions on healing. So, there's that.