Quote Originally Posted by Mimilu View Post
Doesn't Lightspeed reduces MP cost by 25%?

HOWEVER, to go with RLofOBFL's argument, Lightspeed doesn't remove recast time. You'll still have to wait 2.5 seconds after using Helios to use any other healing spell, versus a WHM using Assize or SCH using Indomitability.
It removes cast time for most spells besides Ascend, yes. I believe you're referring to the Global Cooldown.