Kank Shell

This is a defensive spell developed by mages of the elven kank-herding tribes, enabling the recipient to go without armor in the terrific heat of Athas until he actually needs it. When the spell is cast, the beneficiary's body or torso is transformed into the chitinous carapace of a kank, giving him the protection of plate mail (AC 3). This armor lasts until successfully dispelled or the wearer takes cumulative damage totaling over 8 hit points, plus 1 point per level of the caster. It has no effective weight or encumbrance, and does not affect spellcasting. It cannot be added to other spells, such as giant fur, but is cumulative with shield and Dexterity bonuses.

The material component for this spell is a fist-sized shard of kank shell.