Blade Dance: Nightmare's Stride

Burn with ethereal flames and explode forward. You lunch yourself in a 5-foot-wide, 30-foot-long line. Each creature in the Line makes a Dexterity saving throw, taking 4d8 fire damage on a failed save, or half as much damage on a successful one. You may forgo on dealing damage and instead grab 1 willing creature 5 feet along the line, and place them at 5 feet anywhere along the line.

You move along the range of the spell and end this movement at the end of the Line. This movement doesn't provoke opportunity attacks. If you end in another creature's space, you are shunted to the last unoccupied space you occupied, and you take 1d8 force damage.

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 3.