This WA will show on Lord Jaraxxas if you have the kiss debuff from the demon lady adds and will tell you to cast searing pain if you have enough time to cancel cast.
Stop casting macro is as follows:
showtooltip Searing Pain
/stopcasting
/cast Searing Pain(Rank 10)
Enjoy, or don't, I don't care.
Demonology version here:
If you're using this WA for another caster class/spec, please credit me in your version.