is there a macro for this?

[Heenan]

I stand corrected. I just tested it.

[hendrata]

Yes I just tested it too

reset=6 means that if you have not used the macro in 6 seconds it resets the sequence. This might be what you meant.

Either way I decided not to put reset=10/target, just reset=10 because sometimes I may kill things too fast (eg, if there's SW:Pain and Consecration going on), and I am facing multiple mobs. Before 10 seconds is up, I would tab to the second target (because I know DOTs will finish the first one). Now when I switch to the second mob, the macro resets, but Holy Fire is still on CD, so I would get msg "Spell not ready". I think reset=10 works then, it will use Holy Fire whenever it's up.

Initially I put reset=target in there because I thought I want to refresh the sequence for each new target, and I didn't know about reset=10 trick. And honestly, 10 seconds is short enough that for most single target mobs + looting + walking to a new one, 10 seconds have passed by the time I need to cast again.

[elsegundo]

well the reason why i asked about your cast times and cooldowns is to make a macro that will put in enough spells together so that you can, when the macro recycles itself, use your spell that would be done with their cooldown.

or just screw the castsequence.

#showtooltip Holy Fire
/castsequence [mod:alt] Holy Fire, Smite, Smite, Smite, Smite, Smite, Smite

this will show you the cooldown for your holy fire.
this will cast smite unless you press alt.
if you press alt, it will cast holy fire.
since your tooltip will show holy fire, you can see when the cooldown ends.

alternatively, you can use this:
#showtooltip Holy Fire
/cast [mod:alt} Holy Fire; Smite

simple, easy. casts smite. when you see holy fire done with its cooldown, press alt+hotkey to do holy fire. takes a few more calories to watch it, but hey... those are your options.

[Bigfish]

/castrandom Mind Blast,
/castrandom Mind Blast,
/castrandom Mind Blast,
/castrandom Mind Blast,
/castrandom Mind Blast,
/castrandom Holy Fire,
/castrandom Holy Fire,
/castrandom Holy Fire,
/castrandom Holy Fire,
/castrandom Holy Fire,
/cast Smite

No idea if that would work, but 99% of the time, it should do what you want.