This bright green, circular crystal is pleasantly warm to the touch.

A crystal of adaptation protects you from hostile environments, both terrestrial and extraplanar.
This augment crystal protects you from temperature extremes as an endure elements spell, and you are also protected from all alignment traits of any plane (DMG 149).

Prerequisites: Craft Magic Arms and Armor, death ward, endure elements, protection from chaos/good/evil/law.
Cost to Create: 500 gp (plus 500 gp for base item), 40 XP, 1 day.