Knucklelance Pike

Weapon (pike), Rare
This magic pike has a strong yet surprisingly lightweight steel fist on its tip. It deals bludgeoning damage, and attack and damage rolls made with it have a +1 bonus.
Forceful thrust. When you hit a Large or smaller creature with an attack with the lance, you may push the creature 5 ft away from you. It doesn't move if the space it would move to is occupied by an object or creature.
Wall slam. When you use a non-spell attack or feature that pushes enemies, and you would push an enemy into a wall (part of the distance the target would travel cannot be completed due to a solid surface), the target takes 1d6 bludgeoning damage. This can only happen once per use of the attack/feature, if multiple effects would cause multiple simultaneous pushes.