0-level (Cantrip) Evocation
You clap your hands and create an almighty aura that sends a blast wave out in a 30-foot sphere centred on you. The first 1d4 opponents in range must succeed on a Dexterity saving throw or take 1d4 force damage and be knocked prone. On a successful save they take half damage.
This spell's number of targets and amount of damage increases to 1d6 when you reach 5th level, 1d8 at 11th level, and 1d10 at 17th level.