Thunderstrike

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects, and additional 1d4 Thunder Damage.

This spell’s damage increases when you reach higher levels. The damage the target takes increases by 1d4 at 5th level, 11th level, and 17th level.

On a critical hit, a wave of thunderous force sweeps out from you. Each creature in a 15-foot cube originating from you must make a Constitution saving throw. On a failed save, a creature is pushed 10 feet away from you and falls prone. On a successful save, the creature isn't pushed nor knocked prone.