Weapon (greataxe), rare
When you roll a 20 on your attack roll with this magic weapon, the target takes an extra 7 damage of the weapon’s type.
Proficiency with a greataxe allows you to add your proficiency bonus to the attack roll for any attack you make with it.
Notes: Damage: Additional, Damage, Combat, Heavy, Two-Handed
What would be the price for this weapon?
I there’s an average price range in the DMG.