Quote Originally Posted by ZorbaTheGeek View Post
I'm sure there's someone better placed to answer this than me but here's how I understand it.

you can:
/cast A Spell
/cast Spell 2
/cast Spell 3

If, and only if, spell 2 and 3 are NOT on the global cooldown.

Even if this were not true, the example you've been testing wouldn't work because the two trap spells share a cooldown, so Explosive trap would always be up if Freezing trap was and be cast first. (or at least, that's how trap spells worked last time I played a hunter - two years ago)
ok that helps some, gota figure which spells aren't on GCD. The hunter traps are on sep cool down based on trap type..fire, frost, snake. Has been since 3.x patches at least.