Quote Originally Posted by Cynfael View Post
Remember that he doesn't get Blizzard 3 until 34, so if he's still 30ish, he won't want to be casting any ice spells while in AF. Transpose should always be used prior to 34 since the alternative is to erase your AF without swapping it for UI.
Exactly. If you're in AF and cast Blizzard 1, it will remove AF and you'll have no buffs. Mana regeneration is extremely slow at this point. You'd have to cast another Blizzard in order to get UI. This takes 2 GCDs (about 5s), whereas Transpose would get you into UI immediately. It's best to minimize the amount of time that you're in your UI phase.

Also, you can use Transpose if you're in AF when the fight ends. This way, you'll be at full mana for the next fight. Unless of course the next fight is only a few seconds away.