Cleave

You trace your hand across the air in a slashing motion. An invisible slash springs from your palm towards a single target. The target can  choose to make either a dexterity saving throw or a constitution saving throw. The target takes 1d10 + spellcaster modifier slashing damage  per slash on a failed save,  half as much on a successful save (round down). Targets with an AC above 20 take 1d8 damage instead.

This cantrip can be casted using higher level spell slots. An extra slash is added for each slot level above 0. At the 3rd level or higher, the AC condition is removed.