I don't think these would trigger bad blood. From what I can see from the berserk blade, once the battle is over, the PC can throw the blade far away and never see it again.
Did you miss the section on "Using Cursed Items?"
Dragon said:Each item curse has a statistics block, just like a normal magic item. This statistics block explains the trigger and the effect of the curse, which functions in addition to the item's base powers and properties. When an item's curse is triggered, the curse stays in effect until the end of the encounter.
Once an item's curse is triggered for the first time, the item's owner cannot be rid of the item until the curse is broken. A cursed item that is being worn cannot be physically removed. A cursed item that is being wielded (including an implement, a shield, or a weapon) can be put away on the owner's person, but it cannot be discarded.
So all curses have effects that last for the rest of the encounter when they're triggered -- but once they're triggered the first time, you can't discard them [and I elided sections where you have to save or use them for the rest of the encounter, and where if someone takes the item it will teleport back to you after a while].
Methods to get rid of a cursed item in the article:
Easy: Use Disenchant Magic Item to destroy the item [but you only get half Residium.
Moderate: Get a character with good knowledge of Arcana to un-curse it [takes an hour, hard DC check].
Hard: Get a rust monster to eat it.
Variable: GM determined quest to uncurse the item.
Basically, if you have an arcanist, you can generally get it uncursed, though it might take a few days. If you don't, you need to buy a Disenchant scroll or go on a quest.
Nasty, but fun, particularly with rare triggers like this one. Although the Berserker's Weapon has no endpoint beyond "the end of the encounter"--It's not clear whether the character's allies have to batter her into unconciousness when it's triggered or whether they can calm her down and "end the encounter".
That is interesting. That's a move away from using DCs of the PC's or party's level.
For what it's worth, they said a while ago that it was always intended to be that way- it's just they assumed that the party would be facing challenges of their level (so it amounts to the same thing.)
I have to agree with Scribble here; DCs have never been set by party level; they're set by challenge level. Obviously, those usually track -- but note that canned adventures have an ECL that may or may not match character level, and challenges are based on the ECL, -not- on individual character levels. The only place I can think of where DCs are set based on your level rather than the challenge level is Aid Another -- and that's an odd case.