You can deliver a special light blade attack that poisons a foe.
Prerequisite(s): Weapon Focus, BAB +3.
BENEFIT
You gain a TP Pool, which begins at 0 and maximizes at 30. For each successful light blade attack you make or get struck by a melee or ranged attack, you gain 1 TP. At 10 TP or more, you may spend all TP to deliver a special light blade attack that takes a place of an attack of a full-attack or just a single attack. This attack deals damage as normal and the target must make a Fortitude save (DC 10 + half of your character level + your Dexterity modifier) or be poisoned for 1d6 rounds that deals 1d6 points of non-elemental damage per round. At 20 TP or more, you may spend all TP to cause the target must make a Fortitude save (DC 12 + half of your character level + your Dexterity modifier) or be poisoned for 2d6 rounds that deals 2d6 points of non-elemental damage per round. At 30 TP, you may spend all TP to cause the target must make a Fortitude save (DC 14 + half of your character level + your Dexterity modifier) or be poisoned for 3d6 rounds that deals 3d6 points of non-elemental damage per round. This TP Pool lasts until you sleep for the night, in the morning, it empties out. In addition, your light blade attacks deal an additional point of damage for each weapon skill feat in this line that you have.