At 3rd level, a shadowdancer can summon a shadow, an undead shade. Unlike a normal shadow, this shadow's alignment matches that of the shadowdancer, and the creature cannot create spawn. The summoned shadow receives a +4 bonus on Will saves made to halve the damage from positive channeled energy and the shadow cannot be turned or commanded. This shadow serves as a companion to the shadowdancer and can communicate intelligibly with the shadowdancer. This shadow has a number of hit points equal to half the shadowdancer's total. The shadow uses the shadowdancer's base attack bonus and base save bonuses.
If a shadow companion is destroyed, or the shadowdancer chooses to dismiss it, the shadowdancer must attempt a DC 15 Fortitude save. If the saving throw fails, the shadowdancer gains one permanent negative level. A successful saving throw avoids this negative level. A destroyed or dismissed shadow companion cannot be replaced for 30 days.