All of Nalwei's abilities except for his Ultimate consume one of his orbs. Nalwei gains 1 orb every 12 seconds. This time is not affected by Cooldown Reduction.
Q is a pluck and an escape as well as a reverse-pluck; utility is high and skill is also. However, you can /choose/ to just have it such that it's a speed boost or a slow field. W is a powerful push move, and decent at area denial, also able to be used for CC. E is a sustain move (that also serves as area denial) which also can give your enemies a hard time. And the ult just gives you lots of power in multiple ways.