Bursting Coin

You toss a coin worth 1 gp to a space within range that you can see, which is consumed by the spell. The coin explodes in a 5 foot radius, each creature caught in the range must succeed on a Dexterity saving throw, or take 1d12 force damage, or half as much on a failed save.

This spell’s damage increases by 1d12 when you reach 5th level (2d12), 11th level (3d12), and 17th level (4d12).