At 1st level, when an Invisible Blade hits with a successful sneak attack, he inflicts a bleeding wound that deals 2 points of damage per round for 3 rounds. This damage stacks with previous damage caused by a Bleeding Wound attack. He must be either unarmed or wielding only light weapons in order to inflict a Bleeding Wound. At 3rd level, the damage increases to 4 per round, and at 5th level, it increases to 6 points per round. Each level of Bleeding Wound counts as one die of sneak attack damage for purposes of class and feat prerequisites.
- Regardless of the class prerequisites, an Invisible Blade can use any light weapon to cause a bleeding wound (i.e. a handaxe or shortsword can be used, but not a rapier). Small races can only use tiny weapons to cause bleeding wounds.
- Damage Resistance works against bleeding damage, although it's not clear if that's intended or if it's a bug.