by nocker » Mon Nov 14, 2011 8:50 pm
Just some tips useful against any powerful enemy:
1) Try to deny it the first full attack: Advance with your knight(s) and have them ready vs. approach. If the knights aren't packed, I think the Dragon AI won't consider using a breath and will move to hit or cast a spell
2) Silence cast over the dragon's initial area is a great way to deny it the chance to buff.
3) The ideal situation is that the dragon moves to engage one knight and ends being flanked by two knights (or one knight and a summoned fire elemental), inside a silence area. the casters then stand outside the area doing their thing.
4) Buffing the fighter(s) can deal more damage to the dragon than any single damage dealing spell. Haste, Bull's Strength and Heroism are great spells to use. The cleric(s) should keep an elemental out all the time and try to heal the fighters.
5) Ray of Enfeeblement has no save, you just have to hit the dragon's pathetic touch AC (AND spell resistance. Learn to love the feat Spell Penetration). Dragons have so many HDs that even with it weakened you probably won't avoid most if not all of its attacks landing. What you want is to shave down the damage and hopefully buy yet another round to your fighter(s).
6) You mentioned the party being lvl 6. If you're willing to return to an earlier save and grind a bit until lvl 7, your wizard(s) will gain access to THE dragonslaying spell: [Ray of] Enervation. Have the wizard(s) learn it, prepare scrolls of it if needed, and enervate the awesome out of Akrinax.