[tlhIngan Hol] object of the verb {SIS}

[mayqel qunen'oS]

On the other hand though, perhaps I'm approaching this the wrong way,
and the klingonska article isn't related at all to this paq'batlh
sentence.

The klingonska article talks about saying that something rains down
something. But the paq'batlh line says that the thing which is raining
down is blood. In the paq'batlh line we don't have an unspecified
subject raining down something else; we have "that something else"
being the actual subject.

It's just that in the klingonska interview, this possibility wasn't
explicitly pointed out..

~ Dana'an