Dragonspectre Flute

The half-shadow dragon members of the Jaezred Chaulssin created these flutes to aid them in tapping into their inner reserves of shadow magic. The flutes allow them to summon forth the essence of their dragon ancestors in the form of a dragon-shaped shadow mass.
This elegant yet simple flute is carved from a single piece of ebony wood.
The user must spend 1 full round playing the flute. At the end of that round, she must sacrifice 6 hit points. These hit points cannot be healed magically; only time will repair the damage to the wielder's spirit. The wielder can use the flute up to three times per day - though this can prove draining on her life force since each time the instrument is used, there is a 5% chance that the hit point loss is permanent. After the flute is played, it summons a spectral dragon (as the spell). The player of the flute can concentrate on the dragon for up to 13 rounds. Only shadow creatures and Shadow Weave casters can use dragonspectre flutes.
Strong necromancy; CL 13th; Craft Wondrous Item, spectral dragon; Price 75,000 gp; Cost 37,500 gp + 3,000 XP; Weight 2 lb.
Source: Dragons of Faerûn