You deal even more damage with your powers.
Prerequisites
Power Specialization, Weapon Focus (ray), manifester level 12th.
Benefit
Your powers that deal damage deal an additional extra die of damage. This damage stacks with other bonuses on damage rolls to powers, including the one from Power Specialization. So, if the power normally deals 3d6 damage, it instead deals 5d6 damage (counting the benefits of both Power Specialization and Greater Power Specialization).
The damage bonus applies only if the target or targets are within 30 feet.