Ancient dwarven runes cover the tiller and lathe of this magic weapon. Whenever a bolt is loaded into its flight groove, a glyph infused with acid energy is seared into its tip, which explodes on impact. When you make a successful ranged weapon attack with this weapon, add 1d6 acid damage to the crossbow's normal damage roll.
Proficiency with a Heavy Crossbow allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Push. If you hit a creature with this weapon, you can push the creature up to 10 feet straight away from yourself if it is Large or smaller.
Notes: Damage: Acid, Damage, Combat, Ammunition, Heavy, Loading, Range, Two-Handed, Push
Very nice. The balance of rarity and effect are perfect.