Ah, well. I just used some animals that are associated either with Thunder (Lions, loud voice), Storm (Eagle, wings) or life (Snake, Oroboros).

I'd really prefer if Zaphkiel was the only one able to leave Chronias and had his lieutenants elsewhere, probably on the eight heaven. But I guess it's unavoidable if everyone else disagrees with me.

It does, however, kill a few Planescape plot points.