Banhammer

Touch the weapon used in this spell’s casting and imbue it with powerful magic. Until the end of your next turn, the weapon glows, its shaft extends, and a hammer of light appears at its end.

For the duration, your melee weapon attacks with this weapon have a reach of 15 feet and deal an additional 2d8 radiant damage on a hit. When you hit a creature with this weapon, they must succeed on a Strength saving throw or be pushed 15 feet away from you.

Additionally, you create an area of denial around you. Once per turn, when a creature within 15 feet of you moves on their turn, you can make a melee weapon attack against them without using your reaction.