I was all set to tell you all that Wall of Thorns isnt unavoidable, till i checked my druid book (just to be sure) and i realized that of the 3 copies it runs, only one of them is from my core set, i guess it got fixed cuz the other two both said unavoidable. makes that card even more awesome, but onto the OP i cant think of any other situation where it would matter the order. But We've always played the slam as the last result of the attack.