Crypt Keeper Glaive

Weapon (glaive), legendary (requires attunement)

You gain a +3 bonus to attack and damage rolls made with this magic weapon.

The glaive does an additional 2d10 necrotic damage on a hit. When you use the glaive to reduce a Small or larger creature that is hostile toward you to 0 hit points, roll 4d10. You regain hit points equal to the result, and any hostile creatures within 30ft take that much necrotic damage.

Undead creatures are vulnerable to damage inflicted by this weapon and cannot resist it, and undead killed by it cannot be raised from the dead again.

6 feet under. The first time on your turn that you land a successful melee attack with this weapon against a creature that is prone, you automatically score a critical hit, and the number of damage dice is tripled instead of doubled.

"And stay down."