[Gaelinar]

I am working on this macro, but for the life of me I cannot figure out the if behind conditionals. something like:
#showtooltip mangle
/castsequence [harm,nostealth,(behind)] !shred; [harm, nostealth,reset=target] !mangle; !ravage [harm, stealth]
/cast [nostealth,help] !Cenarion Ward