Helmed horror

A helmed horror was an animated construct often found as a guardian.

Physical description
A helmed horror was an empty suit of armor, with purple magical light flickering between the joints. They often carried a greatsword and a heavy crossbow.

Combat
Helmed horrors fought intelligently. They went after soft foes first and used their magic to outmaneuver foes.

Magical Abilities
Helmed horrors could move through the air, as the spell air walk. They could see unseen creatures and objects, as the spell see invisibility. They were immune to several spells. They could imbue a melee weapon that they held with a magical attack power.

History
Helmed horrors were over 5,000 years old. Both Netheril and Imaskar were known to have used helmed horrors. The Seat of Might in Myrinjar was guarded by several helmed horrors. In addition, the deities Deep Duerra, Flandal Steelskin, Gaerdal Ironhand, Gorm Gulthyn, Helm, and Laduguer made use of these constructs.

Creation
The process of creating helmed horrors was something of a badly kept secret for many years. While unknown to the magical community at large, a great number of clerics of Bane, liches and evil wizards knew well how to create these constructs. In later times, it was uncommon knowledge. A powerful spellcaster, with knowledge of both construct creation and arms and armor creation was needed, and a special workroom, along with the spells needed for the ritual.