Venomous Thoughts

3rd-Level Necromancy

Casting Time: 1 action
Range: Self
Components: V, S, M (the tongue of an asp)
Duration: 1 hour

You protect your mind with psychic poison. Until the spell ends, each time a creature attempts to read or detect your thoughts, speak with you using telepathy, influence your dreams, or perceive you through magical scrying sensors, it must make an Intelligence saving throw, taking 4d10 poison damage on a failed save, or half as much damage on successful one.