Belt of Demonic Shadow

Equipment Belt · 40000 gp · Weight 1

Whenever the wearer of this belt casts a spell of level 6 or higher, it summons a CR 7 shadow demon to fight alongside the wearer for 2 minutes. Only one such demon can be present on the battlefield. If the demon is already summoned, casting a new spell of level 6 or higher will heal it for 2d6 hit points.