Rumble

Rumble [minor] by Iczer

'I'm going to hurt you so bad, you're going to feel it next week'

The character can set up persistent vibrations in a struck target that continue to affect the target. By making any critical strike (natural 20, leap attack, power punch etc), the character adds an additional 2D6 damage. More to the point, 20% of the damage dealt is dealt again one melee round later (target may make a saving throw 14+ PE bonuses apply to avoid/resist).
The character, if otherwise unable, also gains the ability to perform a power punch.
If the character possesses other attack forms, such as an energy blast, he may apply this power to that as well, though he does not gain the equivalent 'power punch' with that power.