Necromental in Pathfinder?

[Naj]

D&D 3.5's Libiris Mortis has the Necromental template.

Is there a pathfinder equivalent of that? or something with the same undead/energy drain/create spawn combo that can be added to an elemental?

I would just add these abilities and custom create my own, but then I wouldn't know how to calculate CR. (don't want to party wipe my players).

[Nefreet]

You mean this one?

[Nefreet]

Err, well, I guess not. But it fits the creepy vibe.

[Nefreet]

You could always homebrew the vampire template and apply it to non-humanoids, like a water elemental (and then toss the shadow template on top, too!)