Charged Bolt

You send a bolt of electricity towards a creature within range.  Make a ranged spell attack against the target. On a hit, the target takes 2d4 lightning damage and becomes "charged" until the end of your next turn. 

Casting Charged Bolt against a charged creature grants advantage on the attack roll.  On Hit a charged creature loses the charged status until hit by this cantrip again.

This spell's damage increases by 2d4 when you reach 5th level (4d4), 11th level (6d4), and 17th level (8d4).