Inaccurate?

Iron Bones

(Spell Compendium, p. 125)

Transmutation
Level: Cleric 4, Sorcerer 4, Wizard 4,
Components: V, S, AF, DF,
Casting Time: 1 standard action
Range: Touch
Target: Corporeal undead creature touched
Duration: 10 minutes/level
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)

A brief flash engulfs your undead ally, and through its flesh you can see its skeleton. The skeleton glows a dusky red for a moment.

This spell functions like stone bones (Spell Compendium page 208), except that the subject creature's skeleton changes to iron. The creature gains a +6 natural armor bonus to AC.

Arcane Focus: A miniature skull made out of iron or steel.

Also appears in

  1. Ghostwalk
  2. Tome of Battle: The Book of Nine Swords
  3. Magic of Faerun