Quote Originally Posted by Vael View Post
I think this uncertainty is mostly founded on lack of terminology for the warlock. The intention was that you cannot "cast" invocations while in another form. "Use" is the only equivalent term I could find. In any case, long duration effects still apply, as the effects were in place before you changed form. You can't initiate anything, but you can still benefit from things already there.
Yeah, I can see that. "Activate" maybe? Although that's still a bit ambiguous. That's annoying. I'm actually kinda thankful for the Tome of Battle terminology now.

While this would work nicely in a fluff sense, it would be a downright pain to implement mechanically, and I don't particularly think it would be worth it.
"While you use this invocation to take a form other than your own, you cannot use other invocations, including eldritch blast, save for those that specifically and directly summon, call, manipulate, or facilitate communication with creatures of the Animal type."?