You release a bolt of lightning and shoot it at a designated target that you can see within the cast range. After passing the first target, the lightning splits into three beams and jumps to at most 3 other targets within 30 feet of the target. The target of the lightning can be a creature or an object, but each lightning must specify a different target.
Chain Lightning 5e
Classes: Wizard, Sorcerer
Casting Time: 1 Action
Components: V, S
Each target must make a Dexterity save. The person who fails the save will take 10d8 points of lightning damage, and if the save succeeds, the damage is halved.
When using a 7th-level or higher spell slot to cast this spell, every time the spell slot you use is one ring higher than the 6th-level spell slot, after the jump, the lightning splits out and shoots at a different target.