(General)
The Abyss dreams of devastation; the slightest taste of its power is an incitement to bare-fisted violence.
Prerequisites
Knowledge (planes) 3 ranks.
Benefit
As a
Swift Action, you can allow Abyssal wrath to overtake you. While in this state, you can use one of your hands as a slam natural attack that deals 1d6 points of damage (or 1d4 for Small creatures). A creature that does not have hands can instead use a different part of its body to make this slam attack. You can use this feat's benefit for a number of minutes per day equal to your ranks in
Knowledge (planes). These minutes need not be consecutive, but they must be spent in 1-minute increments.