Quote Originally Posted by Mecan View Post
Typically I'm under the effect of Umbral Ice III when opening my DPS Rotation so I always begin with maximum mana.
You're under the effect of UI3 without casting B3? No. This is clearly the start of the fight since you have RS and QS off cooldown at the same time. (and it's generally not worth casting QS again if it comes off CD later, unless you outgear the tank by a lot)

The Swiftcast Thunder 3 is to add 3 seconds to the Thunder Tick (1 whole tick) because my DPS Rotations are long and drawn out and I don't always have the luck of proccing an Instant Thunder III.
Or because there's not really anything else to use it on, of course. Your only real options are the opening B3 or the T3, and hardcasting the B3 is a better choice for threat reasons. Without Swiftcast or convert you should be using T2.

Edit: If you didn't catch what I mean, by the time I cast my 1st Fire, the Mana Bar is full. So the Full force of a DPS Rotation is primed and ready for several aggressive casts.
Except that if you didn't start with B3, it's not, which was my point.