Thunder Lance

You transform yourself into a large lance of pure thunderous energy. Choose a straight, 5 foot wide and 60 foot long line originating from you. Any creature within that line must make a Dexterity saving throw or suffer 4d8 points of Thunder damage, half on a success, and you teleport to the end of that line. Additionally, the first creature struck by this spell after failing their saving throw have their maximum speed halved until the end of your next turn.

For every level of spell slot used to cast this spell beyond 2nd, the damage increases by 1d8 and the length of the line expands by 10 feet. If you cast this spell at 4th level or higher, you become Hasted until the end of your next turn, ignoring its negative effects.