Typhn's Hydrogen Sphere

You conjure a bright bubble of a thin layer, concealing a dangerous, explosive surprise within. This palm-sized bubble then gets magically pushed over towards your target, and you forcefully pop the bubble through arcane means. An explosion erupts for 15 feet radius around the point where the bubble exploded.

Imposing a Dexterity Saving throw, on fail, any caught within the blast takes 3d4 force and 3d4 fire damage, additionally they are pushed outwards from the blast, by 10 feet. If they succeed, they take half as much and are pushed 5ft away if medium-sized or smaller.

There is a mini mushroom cloud effect upon detonation, you are free to shape the smoke of this explosion however you please, this provides no mechanical benefit.

At higher levels, the damage of both types raises by 2d4 and the push distance is raised by 5ft for each level above 2nd.