You develop a rifled tube of bone that can project small chitin rocks at a target. Furthermore, your body develops the ability to convert calcium and bone into more of these rocks, providing you with a replenishing supply.

MP Cost: 6

Benefit: You gain a natural ranged weapon in the form of chitin rocks. The tube through which the rock is delivered must be on an arm or similar appendage that can be aimed with ease. Chitin rocks deal 2d6 points of ballistic damage, have a critical range of 20, a range increment of 30 feet, and a single rate of fire. You can store up to 20 rocks at a time, and regenerate a number of rocks daily equal to your Con bonus (minimum of 1).