A spear formed of a living metal, or is it flesh inexplicably bound of daedric metal? It is hard to tell when looking upon this weapon.

Daedric Spear This weapon has a +2 bonus to attack and damage rolls

Bound by the Hunt When reaching it's exhalted state, it can form a relationship with Hircine's other weapon, Throatseeker, so long as it is also in it's exhalted state - functioning as a giant arrow for the greatbow, while retaining all of it's features. 

Dormant In it's dormant state, the spear has the following features:

• Symbiotic Hand When thrown, this spear will magically return to the hand of it's wielder.
• Shared Voice The wielder is able to speak through the spear remotely. 
• Harrowing Form The wielder gains expertise in intimidation as well as advantage on any intimidation checks.
• Parastitic Strike Critical hits cause the enemy to suffer a level of exhaustion

Awakened In it's awakened state, the spear has the following features:

• Growing Pain The spear grows a size, and now deals 1d12 damage, and it's bonus increases to +3.
• Parasitic Piercer Critical hits deal an additional 1d12 damage
• Scentslayer The wielder can flawlessly track any creature they have damaged within the last 24 hours, so long as they are on the same plane of existence.
• Reactive Other creatures provoke an opportunity attack from the spear when they enter it's reach. This uses the spear's reaction, not the wielder's.
• Harrowing Form The wielder has advantage on attack rolls against creatures that are frightened of it.

Exhalted In it's exhalted state, the spear has the following features.

• Parasitic Piercer Critical hits deal an additional 2d12 damage, and restore half the damage dealt as temporary health to the wielder.
• Malleable Form The wielder can fuse their wielding arm to the spear, and swing from, or pull themselves to the spear with web-like tendrils from the point where the spear is thrown. 
• Infectious Bloodletting When you strike the target with the spear, they recieve any condition or disease the wielder currently has. 
• Eyes of the Living Weapon You can see through the spear, which has 120ft Darkvision, it can see through magical darkness, 30ft blindsight and 15ft tremorsense.

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

Notes: To attune to this weapon, you must hold it for an entire three days without letting go., Thrown, Versatile, Sap