You have learned to pull with extreme force, at sacrifice to your aim.
Prerequisite(s): Piercing Arrow, BAB +7.
BENEFIT
At 10 TP or more, you may spend all TP to deliver a special bow attack that takes the place of an attack in a full-attack or just a single attack. This attack is made at a penalty of -5, and deals normal damage + 3d6. At 20 TP or more, you may spend all TP to make an attack at the same penalty, dealing normal damage adding + 6d6 to the damage. At 30 TP, you may spend all TP to make an attack at the same penalty, dealing normal damage + 9d6 damage.