Zombies!

This is fantastic. Here we have, in reality, a fungus that could potentially take over the minds, physically, the brains, of any animal.

With already thousands of types, each specialized for one species, there truly is potential for it to evolve to take on any species. It has the technology.

"The more numerous a species becomes, the more likely it will be attacked."

Of course, yes, I'm thinking humans here, but consider the possibilities.
Eagles? Rhinos? Llamas?!?

OK, maybe not. they need something that has a very large population in a relatively small space. So back to humans. Get some of this stuff set up in any city (human hive), and presto.

"BRAINS!"