Chidori

You gather an intense concentration of lightning into your hand. As part of the spell, you can move up to 60ft toward a target of your choice, this movement is unaffected by difficult terrain. Make a melee spell attack against a creature or object within range. On a hit, you deal 7d10 lightning damage. You also deal an additional 1d6 piercing damage for every 10ft you moved during this spell, up to a maximum of 20 ft.

The lightning ignites flammable objects in the area that aren't being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of 5th or higher level, the damage increases by 1d10 and 1d6 respectively, for each slot level above 4th.