Can we look at our developments any time we like?

Some cards seem to allude to the fact that you shouldn't be allowed to look at your developments.

i.e. Alith Anar

Action: When this legend attacks, turn target development you control faceup. If it is a [High Elf] unit with Ambush, trigger its ability as if it just ambushed and declare it as an attacker. Otherwise, sacrifice it.

I just don't see the risk here if you're always able to know what your developments are. In the past I thought you could check whenever you want...but I'm not so sure now?

Yes you can

So essentially you'd never have to sacrifice any development with Alith Anar. Seems kind of pointless to have the sacrifice option there at all...

If it is Kazador he goes to discard and you play him for one with Stand Your Ground...