Aegis of Retaliation

A polished silver heater shield with a spiral black sun of obsidian and onyx emblazoned on it.

The shield is a +1 magic shield. This shield can hold 12 charges.

Charges are gained on missed attacks against you. 1 charge per missed martial attack ranged/melee. 2 charges per missed spell that only targets you.

On your turn,  you may use you action to expend between 1-4 charges.

1 Charge= 1d6+1 Force damage in a 20 foot cone centered on the shield. Each creature in the cone must make a DC 16 DEX saving throw, on a successful save take half damage.

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.