I think I'd like to stand next to you, the Murphy Magnet effect would pull the bad luck away from me...
... and with that, I propose a "Ssalarn's Lodestone" Veil, Hands slot, that has an effect to give an opponent -1 (+1/essence) to all d20 rolls for three rounds, Will negates, Bind effect of Bestow Curse usable once per target per day. If you want to support the PoW:Ex disciplines, make the first effect also count as a Curse. I'd shape it on BFC builds
EDIT: For better balance, theme, playability, and formatting...
Ssalarn's Lodestone
Descriptors: none
Class: Guru, Vizier
Slot: Headband
Saving Throw: Will Negates
Subtle shadows gather around your forehead, congealing into a dull black stone. A dread feeling suggests that something will not go your way.
The wearer of this Veil gains the ability to manipulate the luck of others as a standard action with a range of 30 feet. The target of this manipulation gains either a luck bonus or penalty to their next d20 roll made within the next three rounds. This starts at 1, and increases by 1 for every four Veilweaver levels the user possesses (maximum of +6 or -6 at level 20). If this is a penalty, it is considered a curse effect. The user is subject to the curse effect with no save, and cannot use this power again until it is discharged.
Essence: For each point of Essence invested in this ability, decrease the penalty the user is subjected to by one. If there is more Essence invested than the magnitude of the luck penalty, the excess becomes a bonus.
Chakra Bind (Headband): Binding this Veil to your Feet slot allows you to replace the Luck penalty with the effects of a Bestow Curse. Range, self-curse, limitations on use, and action remain the same.