Jan 30th 2008 6:30PM As a 17/0/44 mage, I always do the Water Elemental combo. It's not a one shot, but all spell hits go off in 2 seconds.
Summon WE, cast Frostbolt, meanwhile WE Nova the guy, then an Ice Lance, Fire Blast and 1 hit from the WE, and you have 3k+2k+1.5k+1k=7.5k damage almost instantly. If trinketed I reach 8k, which is more than enough to kill a bad geared priest/mage/holy pala/sham/druid. Happened to me lots of times, and keeps happening as I keep adding vengefuls to the set.