Adamantine Breastplate of the Battle Mage

This adamantine breastplate may only be worn by a bladesinger.

This suit of armor is reinforced with adamantine, one of the hardest substances in existence, capable of neutralizing the heaviest of blows. While you're wearing it, any critical hit against you becomes a normal hit.

This armor consists of a fitted metal chest piece worn with supple leather. Although it leaves the legs and arms relatively unprotected, this armor provides good protection for the wearer's vital organs while leaving the wearer relatively unencumbered.

Notes: Immunity: Critical Hits, Bonus: Constitution Score, Bonus: Constitution Ability Checks, Bonus: Constitution Saving Throws, Feat: Heavy Armor Master, Combat, Warding