Bar-thalamus Oleander Barbosa (B.O.B)

It,s a human skull .. completely covered in arcane necrotic runes.  A perfect ruby is embedded within the skull holding an ancient necromancer. This necromancer was sacrificed as part of an elaborate arcane collaboration for “rebirth”.  Str-0, Dex-0, Con-4, Int-18(+4) Wis-12, Chr-5.  Hit Points : 28

Only a necromancer can hold the skull. A non-necromancer will immediately take 1d4 cold/necrotic damage. This will continue every round while it is in a non-necromancer possession. It need not be touched, just maintained or in their possession. Such as a death curse. Putting it back on it’s pedestal or passing it to a necromancer will stop the damage ( Remove the death curse). 

The holder of the skull must have the skull equipped and in hand for any and all abilities.  The skull can communicate with the holder either telepathically or audibly.. Bob may make requests for a favorable disposition towards holder or the holders allies.

SPECIAL ABILITIES:  (once per day)

Life Transference: (see spell) - Level 3 •  Necromancy - Casting Time: 1 action. -Range: 30 ft  -  Components: V, S  -   Duration: Instantaneous  -    You sacrifice some of your, or Bob’s health to mend another creature's injuries. You take 4d8 necrotic damage, and one creature of your choice that you can see within range regains a number of hit points equal to twice the necrotic damage you take. AT HIGHER LEVELS - When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd. (Caution: see below for hp @0)

Notes: Advantage: Arcana, Bonus: Melee Spell Attacks, Disadvantage: Charisma Saving Throws, Hope you like being watched will you sleep! Will Bob be your friend, ally, antagonist or worst enemy? You better ask Bob,, Concentrating on runes and allowing it to draw necrotic hit points from holder. If not attuned Bob will slowly steal heath at 1hp per day as not to gain notice., Control