Face Down + Hidden Mana

There wouldn't be a way to have, say, the pirate crusier and the pirate fighter to be the same cost and still retain the flavor.

It'd be extremly hard to keep track of what could be possible. I'd have to have seperate mana totals and stuff and right now it's just "hidden" or "not hidden".

If you dont have a face down card in play (ie, it's now face up) it'll reveal yes.