Eldritch lance

You summon a gleaming lance of eldritch energy an hurl it at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 force damage. Any creature of size medium or smaller must succeed on a DC 10 Strength save, or be knocked prone

This spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).