Divine Chin Strike

Your chin becomes wreathed in radiant force, empowering your strikes.

While the spell lasts:
• Your Chin Strike deals an extra 3d10 radiant damage on hit.
• On a hit, the target must succeed on a Constitution saving throw
or be stunned until the start of your next turn.
• Against undead, fiends, or constructs, the bonus damage becomes 4d10.

When the spell ends (or if you end it early), you release a final burst:
Creatures of your choice within 10 feet take 2d10 radiant damage
(Dex save for half).