Bursting Coin

You toss a coin worth 1gp to a point within range. The coin explodes in a 5-foot-radius sphere centered on the coin. All targets within the area must succeed on a Dexterity saving throw or take 1d10 force damage.

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