DnD 5e Homebrew

The Reaper Blade

Weapon Cursed, Magical, Versatile. Very Rare (this item requires attunement) [Attunes to the target upon being accepted. Will only attune to the one who killed the reaper who possessed the weapon to begin with.   Takes no time to attune though takes 2 hours to become a weapon suited to the killer.]

The Reaper blade becomes a black orb that shifts and changes shape on your person with a wet effect almost. Upon attuning properly to it the weapon shapes into the favoured weapon of the person using it and black veined shadow coils around the users hand up to his wrist.   The weapon becomes a +1 weapon and deals an extra 1d8 necrotic damage on every hit.   The weapon also has 6 charges, it recovers 1d6 charges at the end of a long rest, and can do the following when you spend the charge: -Cast Hex as a 1st level spell.(1 charge) -Cast Misty Step as a 2nd level spell (2 charges) -Use the Copycat ability (see below) (3 charges) -Use the shadow wreath Abiilty (see below) (3 charges)   COPYCAT: You can use your reaction when someone uses an ability or spell on you or within 5 feet of you to mentally enter their mind and learn the secrets of the technique they used. On your next turn you can use their action to mimic the technique you learned HOWEVER, if it is a lasting ability such as concentration spells or the rage ability it will end on the start of your next turn you can also only use the copycat technique on the turn immediately after you use your reaction to do so.   SHADOW WREATH: You extend your weapon outwards and expel a cone of dark necrotic energy outward. Every target within a 20 feet cone must succeed on a DC16 Dexterity saving throw taking 8d6 necrotic damage on a failed save or half as much on a success.

Cost: Good Question