Derisive Rebuke

Prerequisite(s): Antagonize, Intimidate (6 ranks)
Benefit(s): Whenever an enemy that you can see (or sense) deals hitpoint damage to you, you can spend an immediate action in order to mark them; they remain marked for 1 minute (unless the mark is consumed prematurely). Whenever an ally deals hitpoint damage to a being that has been marked by the effect of Derisive Rebuke, they can spend a free action in order to consume the mark and deal an additional [x] points of damage to that being.
[x] is equal to the number of ranks that you possess in the Intimidate skill
Note: You cannot mark a being that has already been marked by the effect of Derisive Rebuke within the last 24 hours.