Hordebreaker's Bow (5e Equipment)

Weapon (longbow), rare (requires attunement by a fighter, ranger or rogue)

This longbow is a magical weapon. It has 7 charges. When you nock an arrow on this bow, you may use an action to fire the arrow with great force, forming a line 5 feet wide that extends from you to a point within 120 feet. Each creature in the line excluding you must make a DC 15 Dexterity saving throw, taking 2d6 magical piercing damage on a failed save, or half as much damage on a successful one. Firing the bow in this way consumes 1 charge.

The bow regains 1d4-1 charges daily at dawn (minimum 1). If the bow is reduced to 0 charges, roll a d20. On a 1, the bow loses its magical properties and becomes an ordinary longbow.