While attuned to this weapon you gain a +3 to attack and damage rolls made with this weapon. When you hit an extraplanar creature, such as aberration, celestial, elemental, fey, or fiend it takes an extra 3d6 damage. Additionally, if you kill a creature that would normally return to its home plane upon death it instead stays on the same plane as you and dies. 

The double-bladed scimitar is the signature weapon of Valenar elves. A haft of fine wood supports a long, curving blade on either end. Forged with techniques honed over centuries, these blades are strong, sharp, and remarkably light. Each scimitar is a masterpiece, and as a result the double-bladed scimitar is an expensive weapon (100 gp) — few though ever have the opportunity to purchase one. A Valenar blade in the hands of a non-elf is generally assumed to have been stolen or looted from a fallen foe, and a Valenar elf might feel entitled to demand its return or challenge the bearer to prove they’re worthy to wield it.

Special. If you attack with a double-bladed scimitar as part of the Attack action on your turn, you can use a bonus action immediately after to make a melee attack with it. This attack deals 1d4 slashing damage on a hit, instead of 2d4.

Notes: Bonus: Magic, Damage: Melee Weapon Attacks, Damage, Combat, Special, Two-Handed