Scimitar of Speed

[ Cimeterre de rapidité ]
Weapon (scimitar), very rare (requires attunement)
You gain a +2 bonus to attack and damage rolls made with this magic weapon. In addition, you can make one attack with it as a bonus action on each of your turns.
Dungeon Master´s Guide (SRD)
  1. DnD 5e Magic Items › Scimitar of Speed