Designer Fire Bolt

You hurl a mote of multicolored fire at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 fire damage. Anything flammable hit by this spell smokes, but does not burn.

This spell is nearly identical to firebolt, other than the fact that the flame is multicolored, flashing all the colors of the rainbow. This spell cannot be taken upon level up, and can only be acquired by copying it into a spellbook from elsewhere. This spell costs 200% more money to buy in scroll form than would normally be necessary.

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