Uzagosh's Replicator

Uzagosh was a Great Old One destroyed during the Bronze God's Dreamworld era. Zis destruction instantaneously fabricated a scant few Uzagoth's Replicators, dispersed through the time and space of existence. Loathing that magicians exist after the extinction of its creator, Uzagoth's Replicators mete out petty vengeance against those elderday magicians that outlived Uzagosh.   Uzagoth's Replicator cannot be attuned or controlled by any creature. Any creature that willingly comes into contact with Uzagoth's Replicator takes 2d10 force damage that cannot be prevented or redirected.   If any elderday spell is cast within 360" of Uzagoth's Replicator, it automatically and instantly fabricates an abominable artifact creature within spell level x d4 miles of the magician who cast the spell. The abominable artifact existence is agony and it will do everything within its power to track down and destroy the magician who cast the elderday spell. It will not act suicidally in the pursuit of the magician, but will act within its abilities and understanding to destroy the magician whose spellcasting created its awful form.   The abominable artifact creature will ally with all others of its kind and is able to cast detect creature at will when tracking its creator, with no limits across distance, planes or spaces unless the magician is hidden by magical effects. The abominable atifact will not deliberately harm others but seek only to destroy the magician whose spellcasting created it. If the magician that created it is destroyed, the artifact abomination will also be destroyed.   A maximum number of abominable artifacts per magician may be in existence at any one time = half magician's proficiency bonus (rounded up)   The abominable artifact creature:

• AC = 8 + maximum level spell that can be cast by the magician (for the purpose of magician's attacks/actions only vs the abomiable artifact add additional 2 to AC)
• Hit Points = 10 + (5x maximum level spell that can be cast by the magician)
• Temporary Hit Points = 2x proficiency bonus of magician (for the purpose of magician's attacks/actions only)
• Attack = 1 + maximum level spell that can be cast by the magician, range 10" (additional +2, + 10" vs magician only)
• Damage = Magical Slashing/Bludgeoning/Piercing damage (randomly determined) d6 x maximum level spell that can be cast by the magician (damage cannot be prevented or redirected by magician)
• Machine resistance = all damage to abominable artifact is reduced by half proficiency bonus of magician (rounded up) per attack or is reduced by proficiency bonus of magician (rounded up) when source of attack is the magician
• Condition resistance = Charmed, Frightened, Incapacitated, Poisoned, Stunned, Surprised, Exhaustion
• Senses = Truesight range 20" + 5" x maximum level spell that can be cast by the magician
• Speed = 40" (ignores difficult terrain)
• Swim = 20" (ignores difficult terrain)
• Fly = 10" (ignores difficult terrain)
• Tunnel = 5"
• Statistics = 8 + maximum level spell that can be cast by the magician
• All savings throws and ability checks made with advantage (add +2 when the savings throw or ability check relates to the magician)
• Once per day the abominable artifact can planar shift or teleport as per the spell