Adds 2 Power to the Fiendish rune set. Rune set bonuses:
2 Power: + 0.21% Vigor
3 Power: + 0.24% Strikethrough
4 Power: Fiendish: Upon generating a Psi Point, gain an Empower for 3s.
Empower: Increases Magic Damage Dealt by 1% per stack. Stacks 5 times.
5 Power: + 0.30% Vigor
6 Power: + 0.33% Strikethrough
7 Power: + 0.36% Vigor
8 Power: Fiendish: At 3 or more stacks of Fiendish, your Telekinetic Strike and Psychic Frenzy deal an additional 49 magic damage to foes.

(4) and (8) are disabled while in PvP instances.