PHB

Shocking Grasp

0-level (Cantrip) Evocation

Lightning springs from your hand to deliver a shock to a creature you try to touch. Make a melee spell attack against the target. you have advantage on the attack roll if the target is wearing armor made of metal. On a hit, the target takes 1d8 lightning damage, and it can't take reactions until the start of its next turn.
At higher levels: The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).