Sith Concentration Talisman

Type: Sith talisman
Skill: Control, sense or alter
Cost: Not available for sale
Availability: 4
Game Notes: Force-user must touch the talisman throughout the Force power’s initiation. It grants a 1D, 2D, or 3D bonus to any one Force skill. Affected skill may be changed between uses of Force powers, but not during the initiation of one power that requires more than one Force skill. The amount of bonus is dependant on the particular taliman; weaker ones are more common, while the more powerful ones are extremely rare.
Source: Tales of the Jedi Companion (page 80)