The Golden Avenger
Long ago, all the lands of Ur-Peregavin sang the praises of the great paladin Bulwie of Calthanar and his dear companion Oromeyatijal, a golden dragon. Sadly, Bulwie was suduced to evil by the Dracolich of Ettinsmarsh and his promise of immortality. Grieved and angry, Oromeyatijal went forth in an attempt to either redeem his friend or to slay him. The dragon caught Bulwie alone on the Pass of Lorzen and of the terrible battle that ensued only the eagles in their eyries can tell us. In the end, Oromeyatijal was gravely wounded, and Bulwie, now utterly hate-twisted, used his old, now weakened, Holy Avenger to slay his former companion. But, in an unexpected turn of events, the soul of Oromeyatijal entered into the sword, making it a weapon even more powerful and holy. A great pain came upon Bulwie whenever he held the sword or even looked upon the blade. But in his pride Bulwie refused to throw away the weapon, and instead kept it locked in a secret chamber of his fortress along with the bones of the slain golden dragon. A century later, a planar champion defeated Bulwie and rescued the sword from the bowels of the fortess. What has happened to it since is debated by the few historians who research such things.
The Golden Avenger is a +2 cold iron longword which becomes a +5 holy cold iron longsword in the hands of a paladin. It provides spell resistance of 5 + the paladin's level to the wielder and to anyone adjacent to him. It also allows the use of greater dispel magic once per round at the level of the paladin.
However, no matter who wields the weapon, whenever the wielder recognizes the sight of a chromatic dragon, blackgaurd, or dracolich the spirit of the gold dragon awakens, filling the wielder with tremendous power and rage. He gains +4 to Strength and Constitutionm, a +2 to Will saves, and a -2 to AC (as a Barbarian rage). The sword itself takes on the attributes of a Dragon's Bane weapon (rising to a +4 weapon for non-paladins, but remaining at +5 for paladins, and dealing an extra 2d6 damage). The wielder attacks the evil creature at once, losing all concept of stealth or negotiation (a paladin gets a Will DC 22 saving throw to avoid this rage, but a non-paladin gets no saving throw).
Depending on the foe, there is also a small percent chance that the wielder will also sprout golden dragon wings and gain a one time breath weapon attack (fire, 30 ft cone, Ref DC 20):
Chromatic dragon........2%
Blackgaurd.................5%
Dracolich...................10%
The righteous rage does not end until the foe is either dead or out of sight. The wielder is fatigued at the end of the battle, as a barbarian would be.
Well, what do you think? Would this have a price to it?