An icy beam shoots from your outstretched fingers.
Make a ranged spell attack. On a hit, you deal 1d8 cold damage and reduce the target's Speed by 10 feet until the start of your next turn.
Cantrip Upgrade. This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).