I use this macro for fire burst without problems:
/cast Berserking(Racial)
/cast Combustion
I can use it while casting and Berserking activates properly right after my cast.
However, the following macro:
/cast Berserking(Racial)
/cast Icy Veins
... does not work. If I use it at the end of Ebonbolt cast, it does not activate Berserking. I have to press the button again. Can anyone help with this?