Attuned Khopesh of Severance

This curved bronze sword shimmers with a dangerous energy, adding a +2 to your hit die. The blade can be summoned into your hand using a bonus Action, as long as it is on the same plane of existence as you. The kopesh has 10 charges that replenish at midnight every night. You may expend the charges to perform the following actions:

Primordial Leech - (2 charges) The blade is coated in a sickening green flame. On a melee hit, the attack does an additional 2d6 Necrotic damage and the flame sticks to the creature for 3 Rounds. Using your bonus action, you may either cause the flame to leap from the creature to a different creature of your choice that you can see within 10 feet of it or continue to burn the creature it occupies. The targets take 2d6 Necrotic damage. Requires Concentration. 

Arcane Mimicry - (5 charges) Upon making a successful melee attack on a creature, you may "borrow" a spell or an ability from them. If it is a spellcaster, roll a 1d8 to determine the level if spell (if applicable) that is stolen and can be used on your next turn. If a non-caster creature, the DM decides what "ability" to loan you and the implications of said ability. The stolen ability lasts 3 rounds and the spell lasts 24 hours or until it is cast. 

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Melee Weapon Attacks, Upon attuning to the blade, you must succeed a Wisdom saving throw beat a DC 16. Upon a failure, you violently grab the blade and attempt to plunge it into your abdomen. Nearby PCs and NPCs may be able to prevent you from fatally wounding yourself.), Versatile, Sap