Quote Originally Posted by Zanarkander View Post
The actual use of Swiftcast in the opener is to allow the use of Enochian and Raging Strikes during the Swiftcasted Fire 3 cooldown. If you use them after hard-casting F3 you'll lose around 2 seconds before you can start casting Fire I.
But you lose 2.5 seconds by Swiftcasting the F3.