Homebrew:Daiklave of Conquest

Weapon (longsword), rare (requires attunement)

As an action, you can cause any creatures of your choice within 30 ft. to make a Charisma saving throw. Each creature that fails the save becomes Frightened

for 1 minute. Whether they succeed or fail, they suffer disadvantage on the next saving throw they make before the end of your next turn. All creatures within 30 ft. of you who you did not subject to a saving throw get +1 on their next attack roll before the start of your next turn, and are immune to  Frightened
until the start of your next turn.

This daiklave has 3 hearthstone sockets.