Bone Spike of Primal Death

Requires Attunement.
This magic weapon warns you of danger. While the weapon is on your person, you have Adv on initiative rolls. In addition, you and any of your companions within 30 ft of you can’t be surprised, except when incapacitated by something other than nonmagical sleep. The weapon magically awakens you and your companions within range if any of you are sleeping naturally when combat begins.
When you roll a 20 on your attack roll with this magic weapon, your critical hit deals an extra 2d6