[kianduatha]

I disagree on the Saigu--the idea is there and they are a very valuable addition to your lineup. They'd be better with a second random(or even better a linked random so they get 2 in a path all the time), but even as-is they're terrific force enhancers. You get easy access to H3 and up, power of the spheres, reinvig in communions(mmm), and a more efficient base to start arrow fending guys. No need for something spectacular.

The Ryuujin is...nice. They're highly mobile, specialized force multipliers. You can really mess with your enemies by constantly shifting what magical support your different armies have. I used to think they were overpriced, but I've grown out of that.