Thick Skin

Thick Skin is a runic spell that appears in Ultima Underworld II.

Description
The Avatar could learn this spell by studying the long-abandoned notes of the magician Alorik in the ruined city of Anodunos. Casting it would grant the hero a level of mystical protection greater than that afforded by the Resist Blows spell, although not as great as that which could be attained through Iron Flesh.

Trivia

 * Purple potions of Thick Skin feature frequently in the game, and may be purchased from the Killorn merchant, Merzan.