Making items with both boosts and penalties.

[Morithias]

Is there any precedent for this? Is there a precedent for creating something like say..

"Dangerous Bustier +- X" : When worn this suit of clothes creates a reckless mindset in the wearer, who will gleefully charge into battle. This article of clothing gives a bonus to attack rolls, while giving a similar negative to armor class. This item does not function while you are unconscious or helpless.

Is there are precedent for this kind of stuff? I know "check with your DM" and all, but he's not on, and my group switches DMs a lot. Plus I might use this kind of stuff in a future campaign as loot.

Thanks for the help!

[Agent 451]

Legacy items in Weapons of Legacy work kind of like this. They gain power as you gain levels, but they exact penalties to your hit points, skill points, and give penalties to attack and to skill checks.

[eggs]

This is how quite a few cursed items work, but they don't have a particular algorithm or clear model for item pricing.