Code:
#showtooltip [pet:voidlord] Disarm; [pet:observer] Optical Blast; [pet:shivarra] Mesmerize
/cast [pet:voidlord,mod,@focus] [pet:voidlord] Disarm; [pet:observer,mod,@focus] [pet:observer] Optical Blast; [pet:shivarra,mod,@focus] [pet:shivarra] Mesmerize
If these don't activate the GCD and you don't mind error text, you can also do this:
Code:
#showtooltip [pet:voidlord] Disarm; [pet:observer] Optical Blast; [pet:shivarra] Mesmerize
/cast [mod,@focus] [] Disarm
/cast [mod,@focus] [] Optical Blast
/cast [mod,@focus] [] Mesmerize
Let me know if something doesn't work as expected.