If you install EDM 1.21 separately and enable it (as opposed to the version that comes with CBM 1.92), it comes with a special testing feature. Start up a new game in the early age, and at the bottom of the nation selection list you'll find "Endgame Diversity Mod, testing nation". If you select this as your nation, you'll have access to every single summon available in EDM as recruitable commanders for 1g & 1 resource. This should allow you to see what they can do, at least, if not what they're actually capable of in battle. Hope this helps.
Let's try to have our pretenders submitted by Wednesday. Still waiting on Whollaborg, Bat/man, shard, and, well... me.
Does this sound reasonable?