Caladbolg

Weapon (greatsword), very rare

Caladbolg, meaning “hard cleft,” is the sword of Fergus mac Róich, the former King of Ulster who was betrayed and tricked out of his throne. It is said that Caladbolg is so powerful, it can cleave the tops of multiple hills clean off. When Caladbolg is swung, the arc of a rainbow follows the blade. You have a +3 bonus to attack and damage rolls made with this magic weapon. Whenever you make an attack with this weapon, roll a single attack roll. You may apply this same attack roll to up to 2 additional targets. Roll the damage once and apply that damage to any targets you hit.