Tankard Basher

As part of casting this spell you make an unarmed attack or melee weapon attack with an improvised weapon, against a creature within range, otherwise the spell fails. If the attack hits the target it deals normal damage as well as an amount of force damage equal to your Intelligence  modifier.

This spell's damage increases when you reach higher levels. At 5th level, the spell deals an extra 1d8 force damage and the target must make a Strength saving throw or be pushed away from you a number of feet equal to 5 plus the force damage dealt. The damage increases to 2d8 at 11th level, and 3d8 at 17th.