Shakeifs is a dark black lute, its strings are razor sharp. Whilst playing this lute normally you have +1 to Charisma (Performance) Checks. 

Razor Sharp Music: When you use anyone of the abilities below you take 3 slashing damage as the strings slice into your hands, even if you use a pick.

Sorrow Filled Anthem: As an action you can play Shakeif in a sorrowful tone, every creature in 30 ft that is hostile to you and can hear the anthem has to make a DC 15 Wisdom save or be Frightened 

Joyful Filled Melody: As an action you can play Shakeif in a classical and joyful tone. Every ally within 30 ft and can hear the melody gains 4d6 temporary hit points.

Rage Filled Chorus: As an action you can play Shakeif in an angry and violent tone, Every creature within 30 ft of you (Not including you) takes 7d6 force damage and makes a DC 15 Dexterity save or be knocked prone. You also take 2d8 piercing damage as the chords you shred, shred back.

Sentient Weapon: This weapon is a sentient demon. It has a CHA INT and WIS of 14 16 and 19. Shakeif is almost always singing some dead filled tale in Infernal, if not he is making poems and haikus in a shakespearean style. 

Notes: Requires proficiency in lutes in order to attune.