Drain Willpower + anything with 150% Shock is a guaranteed way to disable the dragon.

After that deal with the resistances through Nullify Resistance / Soultap and boost your attack damage Oath of Destruction / Rage and its Armor (Silver Arrow).

Just tried it again:
T1 ranger delays turn
Dragon summons stuff and attacks Araste
Mage uses Drain Willpower and Lightning (and maybe a buff)
Araste gets attacked down to 50% health
Ranger charms 2 summons and maybe a a buff/ Silver Arrow

T2 ranger delays turn
void summons attack eatchother
mage uses Soultap on the dragon
+ Deathpunch and another small spell
Ranger shoots the Dragon down to around 2000 health using the regular attack

T3
ranger deals the last points of damage

Thats a 3 turn kill without preparations.

Last edited by eidolon; 01/08/14 11:02 AM.