Scathe in Rotation?

[Conradus]

In PS3.
I did Fire - Scathe - Transpose - Bliz - Scathe - Transpose I think.
I basically never have a cooldown but I didn't get far.

Using Scathe in the Fire half of your cycle means your Astral Fire buff isn't increasing your damage like it will with Fire. Scathe is also a rotten replacement for Blizzard in a standard rotation, as Blizzard does more damage for less MP (and ensures you don't accidentally drop your Umbral Ice buff).