Frogus:
If you took out two dragons with a chromatic orb spell, then you're probably the luckiest person of this age - you should try the lottery.
Seriously, the saves vs spells (and the other saves) are based upon level and class.
A mage gets better saves vs spells than an fighter of the same level, but get worse saves vs death for instance.
At 10-12th level - depending on class and race - ones save vs spells are a 10, which means that that person has a 50/50 shot at making the saving throw.
Chromatic orb grants a +6 to saves, which makes the character have a save vs the chromatic orb at 16, so the chances to save vs the effect is now 4 out of 5.
Dragons have a normal save vs spell at 6, so they have to roll a "1" on a 20 sided die in order to fail their save.
Furthermore, Firgkraag have a magic resistance of 65%, so if you took him down with a single spell, then you realize your luck.
If I were you, I wouldn't hope that Cromatic orb will save your hide any more in this game
About the Epic Battles:
There are lot of ways to have a good battle with a dragon. But if your too high level, it becomes a breeze, and if you're too low, the dragon'll eat you for breakfast.
Use all your characters. They are needed. Have spellsequencers loaded with magic missiles or what your usual strategy is vs high HP monsters.
If you have access to lower magic resistance (5th level spell) - use it. (or do the cheesy thing and cast the priest spell "magic resistance" on the dragon)
Have your fighters pump up before going into melee - use your potions - these kind of battles are what they are for. And when they are getting hurt, draw them away.
Rod of resurrection is very handy battling dragons...
The first time I fought Firkraag was the greatest - I had a six person party, and all were about 10-11th level. Took me two reloads and even then, some died.
Now, he falls to a solo 10th level character - yey.
-Sylvanerian