Iron Flesh

Iron Flesh is a runic spell that appears in Ultima Underworld I and II.

Spell Description
This spell offers the greatest protection of any known runic spell, rendering its caster nigh invulnerable to damage, as the name already indicates. Using the spell Iron Flesh allows a magician to withstand nearly any peril, and may even be used to withstand the fury of a loosed djinn, by turning a baked-on cover of Filanium-enriched mud mixed with Basilisk Oil into a clear and powerful cover over the body.

Trivia

 * In Ultima Underworld II, purple potions of Iron Flesh may be found occasionally throughout the game world, and may be purchased from the Killorn merchant, Merzan, despite their illicit status on that world.