Ishtar’s the separator

4th Level Arcane Conjuration (named)

Casting Time: 1 hour

Range: Self

Components: V, S, M (blood vial from a willing creature, and 500gp in magical ingredients for the casting)

Duration: 24 hours

The caster takes the blood vial from the willing creature other than the caster while playing the most amazing solo for the whole casting time. After the solo, the blood shapeshifts into a powerful axe, called “The Separator”. Until the end of the duration, the separator is connected with the creature who donated the blood, and it’s automatically attuned with the weapon, this attunement doesn’t count to the creature’s total attunement magical items.

The separator

Weapon (Greataxe), legendary (requires attunement)

The Separator is a magical greataxe +2, once per turn when this weapon hits a creature you can unleash charged energy from the weapon, dealing an additional 2d10 lighting damage.

If the spell was cast with higher level: