Thermals Flaming Charge

The caster lights on fire and dash 30 ft in a line. This doesn't affect movement. The Creatures in the way take a dex saving throw on a failed throw they take 2d8 fire damage on a save it is halved.  They do not take opportunity attacks. If the caster is entangled or grappled he escapes but only goes 15 ft. If the entangle is flammable it starts to burn