Eldritch Bolt

You fire a bolt of purple eldritch energy at a creature. You make a ranged spell attack against a creature within range of the spell. On a hit you deal 10d8 psychic damage. If you roll a natural 1 the bolt explodes with psychic energy, and you must succeed on a constitution saving throw or take 5d8 psychic damage that avoids resistance.

At Higher Levels. For every slot level above 5th level used to cast this spell, this spell deals an extra 1d8 psychic damage when you hit another creature but not when you take the damage yourself.