I tried this and it works great, thanks heaps. The flame shock then random cast sequence works well. If a trash mob doesnt need a flame shock then nova totem and chain lighting plus death and decay usually takes out those mobs anyway, but this macro works wonders for dps on things like boss fights.

First boss I try is the snake boss in gundrak, for the first time my guys broke 2000dps - well 1 did, the other 2 were at about 1800/1900, but dps is up about 300 from before plus its easy to manage, applying a flame shock when it runs out isnt hard.

Thanks heaps for the tips