A barbed spear, carved from the bone of a sea monster. 

When thrown, on a successful hit, it does an extra 5d8 piercing damage against enemies that are Large, Huge, or Gargantuan.

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

Notes: Damage: Additional, Damage, Combat, Thrown, Versatile