1 day

extremely rare

kills/ damage dealt can be exchanged for spell slots

1 kill=first lvl spell slot regained
3 kills= second lvl spell slot
5 kills= third lvl spell slot etc.

or

10 necrotic damage dealt= first lvl spell slot
25 necrotic damage dealt= second lvl spell slot
40 necrotic damage dealt= third lvl spell slot

+1d10 slashing +1d6 necrotic damage
+1d6 necrotic damage if the same target is attacked a second time in the next turn without anyone else being attacked with the glaive.

cleric/ paladin, evil-aligned

heavy, reach (5 feet), two-handed

a spear that steals the souls of the dead

a large, green-bladed glaive with pitch black shaft that chills it's unfortunate victims to the bone

3 meters

the blade is made out of strange steel that resembles jade in colour and adamantium in strength. the shaft is made out of cursed steal that absorbs the blood that fell upon it.

3,1 kg

This glaive is passed down among the most skilled warriors at Nax's home-base

this magic glaive's blade absorbs the souls of the victims it kills and grants its user a more potent ability with divine magic. If more victims are claimed it becomes easier for the user to cast spells. Of course, this is only the case if the god the wielder worships stands behind their actions.
The shaft of the glaive has been made of a special cursed steel that draws in the blood of its victims to keep it wieldable. this can also make a death both faster and more agonizing.

The glaive was forged by demon minions of the god Apophis with water from the river Sticks.