Radiant Shield Bash

You pray to your god and your shield is imbued with radiant holy energy.

• You can take an additional Attack action on your turn to shield bash a creature within 5 feet of you that creature must make a Strength saving throw. The DC of the save equals 8 + your proficiency bonus + your Strength modifier.
  • On a failed save:
    • The creature takes 1d6 bludgeoning damage and is knocked prone.
    • You can use your bonus action to automatically releases the holy energy from the impact as an explosion that deals 1d6 radiant damage plus your Charisma modifier to all enemies within a 15 feet radius at 1st level, plus 1d6 every 5 levels. Opponents within the radiant explosion radius that succeed a Constitution saving throw take half the total radiant damage.
  • On a successful save
    • The creature takes half as much damage and is not knocked prone.
    • No holy energy is released.
  • If you aren't incapacitated, you can add your shield's AC bonus to any Dexterity saving throw you make against a spell or other harmful effect that targets only you.

You must use a shield to execute this feat.  Most be devoted to a god.