Amulet of Divine Protection

While wearing this amulet, you gain the effect of the Shield of Faith spell, granting you a +2 bonus to AC. Whenever you take damage for the first time on a turn while wearing it, you must make a Constitution saving throw, as if you were concentrating on a spell. On a failed save, the amulets effect is suppressed for 1 minute. Maintaining the effect of the amulet does not prevent you from concentrating on a different spell. 

Notes: Bonus: Armor Class, Cleric or Paladin