That's correct milt, the first one is actually a bit weird, you'll target, there's a 2 second lag then the rest of the round you focus (4 more seconds) ... following that you focus on the next one for 6 full seconds.
It's not meant to be an area of effect kill spell, it's meant to be quite similar to how DnD describes it.
I've had mixed results with it, lag does seem to be a factor, as does people killing your target before you're done. But it has also been very effective for me too. Think you guys (Steel, Acacea, Abiorn, Jaelle, Jennara) saw me use it quite effectively.
Not really sure what can be done about lag and/or people killing your target though.
I'll think on it some more...