[Fantasy] On the Origin of Magical Species: A Wizard Did It

[johndallman]

Originally Posted by Prince Charon

The term 'rust-sparrows' brings to mind 'rust monsters as small birds that dodge well,' which is a pretty scary thought - especially as keeping them under control would be much harder.

That's pretty much what they are. Controlling them is what the permanent version of Charm Monster, which only works on creatures of "low" or lesser intelligence is for. "Fly, my pretties! Fly!"

Originally Posted by Prince Charon

I'm imagining them having a 2d or more Corrosion Attack with Contact Agent and maybe Ferrous Metals Only, but that's not the only option.

You don't send them up against adventurers, who will just kill them. You use them on people's mighty iron gates, robot dinosaurs and so on.