Here is yet another strategy to killing dragons, that worked on Firkraag, so it should probably work on all of them: Set all traps and snares that you can, even if it means resting a lot, I set 8 spec. snares, and 4 snares; then cast, you guessed it, Magic Resistance, then cast Greater Malison, which makes him hostile, and sets off the traps, then hit him with Lower Resistance, and cloud kill, and any big damage, no save spells. I killed him in three rounds, with no deaths, even though we were pretty banged up.

Sounds a bit cheap to me, I wonder is this the way to kill a dragon, dragons
are suppose to be one of the most intellegent creature. And he should get
really suspicious while you set all those traps, hm?
Bioware shall work on this AI-thing I think.