um i guess it can be good but i would rather have a high level arch mage pumping out elementals or blizz'ing the crap out of fiends and statues. pally is always my 2nd hero
for going against ud i go like this:
am=we, aura, blizz, blizz, blizz, lvl 6
pally= light, aura (shield only if they have tri-hero, not necessary if they only have nova and coil), light, aura, light, lvl 6