Aegis

Blessing of the Goddess of War. You gain a +3 bonus to Armor Class, in addition to the shield’s normal bonus to AC.

Shield of Strategic Wisdom. You have advantage on Wisdom (Perception) and Wisdom (Insight) checks while you are conscious. In addition, you can’t be surprised.

Unbreakable Aegis. When you fail a saving throw, you can use your reaction to treat the result as a success. Once this property is used, it can’t be used again until you finish a long rest.

Gaze of the Gorgon. As an action, you present the terrifying visage upon the Aegis. Wisdom Saving Throw: DC 18, each hostile creature of your choice within a 30-foot radius that can see the Aegis. Failure: The creature is frightened of you for 1 minute. While frightened in this way, its speed is reduced to 0. The creature can repeat the saving throw at the end of each of its turns, ending the effect on a success. Success: The creature is immune to this property for 24 hours. Once this property is used, it can’t be used again until you finish a long rest.

Protection of Zeus’s Daughter. While you are holding the Aegis, allied creatures within 10 feet of you gain a +2 bonus to AC against attacks you can see. 

Shields require the Utilize action to Don or Doff. You gain the Armor Class benefit of a Shield only if you have training with it.

Notes: Bonus: Armor Class, Feat: Mage Slayer, Combat, Warding