Shadow Form

Shadow Form is a High-level class ability usable by Shadowdancer only.

In-game description
"Shadow Form This ability temporarily transposes some of the user's tissue with shadow-material, making the subject partially incorporeal. For the next 5 rounds, all physical attacks directed against the Shadowdancer only deal 50% of their normal damage. During this time, the Shadowdancer is also under the effects of Improved Invisibility and cannot be directly targeted by spells."