[Frost] Stacking Images/Icy Viens

[superlordwar 0]

I don't understand the need to stack Icy Viens/Mirror Images by delaying the cd on Images to use at the same time as Icy Viens. Could someone explain the importance of this for me?

Armory link just in-case doubt its needed for this question.

http://us.battle.net/wow/en/character/proudmoore/Frösty/simple

[Vossi 0]

The Mirror Images appear to scale with your haste rating. With Icy Veins, you should be able to get one or two additional casts off.