Blue Flare

You unleash an intense and beautiful line of blue flames in a 50 foot line and 5 foot wide. Any creature caught in the line must make a DEX saving throw. On a failed saving throw creatures in the line take 5d4 fire damage on a saved throw, creatures take half damage.

Higher levels: 3rd level 3d10, 5th level 5d8, 8th level 10d10