5th-level Spell: Vorpal Shot

Aspetheurgy (Transmutation)

You touch a piece of ammunition or a weapon with the thrown property, granting it a razor-sharp edge. The first time a creature attacks with the empowered item, it adds +3 to its attack and damage rolls, and ignores all resistances and immunities to the weapon's damage type. On a hit, the creature takes 6d8 additional damage. If this damage reduces the target to 0 hit points, it receives a mortal wound and immediately dies.
Once an attack has been made with the piece of ammunition or weapon, the spell ends.
Source: KCC

• Casting Time: 1 bonus action
• Range: Touch
• Components: V, S, M (a piece of ammunition or a weapon with the thrown property worth at least 1cp)
• Duration: 1 round
• Ritual: No