Celerity

You borrow a slice of time from the future, pulling it into the present so you can act. Upon casting this spell you can immediately move up to your speed. After moving this way, you have a speed of 0 until the end of your next turn.

At Higher Levels. When you cast this spell using a 4th level slot, you can immediately use an action. After taking this action, you are incapacitated until the end of your next turn. When you cast this spell using an 8th level slot, you immediately take an extra turn. After taking this turn, you are incapacitated and have a speed of 0 until the end of your next turn.