Chromatic Slicer

Select one of acid, cold, fire, lightning, or thunder. You draw a blade of this element from your focus, and make a melee spell attack. On hit, you deal 1d8 of that damage type. If you use both hands to cast this spell, you may add your casting ability modifier to the attack.

You may attack an additional time at higher levels: Twice at 5th level, three times at 11th level, and four times at 17th level. All attacks are made as part of the same cantrip/attack action.