You channel profane energy from the baalimar blood in one hand into the mundane weapon in your other. After the weapon is filled, it begins to pulsate, releasing that energy back into your other hand, but not into the vial. The energy takes the same shape as the weapon it was channeled into, having the exact same properties with a few exceptions. The coloration on the weapon seems washed out, blackish purple particles emanate from it, it vibrates lightly in your hand, and it feels more solid than the other weapon.

This weapon does an additional 3d6 necrotic damage on every successful attack, will automatically return to your hand after hitting its target if thrown, and cannot be damaged by non-magical means. Wielding this weapon alongside the original will count as dual-wielding.

If this spell is cast with a slot 4th level or higher, it gains an additional 1d6 of necrotic damage per level higher.