You can take the Dash action as a Bonus Action. When you do so, you gain a number of Temporary Hit Points equal to your Proficiency Bonus.

You can use this trait a number of times equal to your Proficiency Bonus, and you regain all expended uses when you finish a Short or Long Rest.

Take 1d4 damage for each turn in combat you haven't moved.

Option: You use your skateboard for movement.

If you choose to use your skateboard, you can move in one direction only per turn. (This means no back and forth). You can make one turn left or right while on your board per turn. While on your skateboard add 1d4 damage for every 30ft traveled in combat without stopping or being attacked. This movement is cumulative until you make an attack or get off your skateboard.

When you take the disengage action gain resistance to all damage for one turn.