Is there some way to get info on the costs of the rituals?

So, basically the first time I'm properly playing the game, messing around with necromancer, and what's confusing me is that there's only icons for the ritual costs, which are sometimes obvious, sometimes not.

The hands are obvious, since it's a resource that's explained and is part of your income. The AP I could figure out fairly easily from seeing the same icon in terrain info and just testing the ritual. But then I have the pyramid of skulls which needs 25 hands, but also 25 skull icons? I mean the sensed dead is shown as skull icons, but also when I used the ritual didn't go down, so unclear what it's supposed to be. Then there's animate abomination which requires 50 hands, but also 50 I don't know know what, the icon doesn't look like anything recognizeable.

And this is just a couple of rituals from the one class I've tried. The wiki seems to be outdated, the manual doesn't mention it, it seems weird that there's no way for me to know what I'm actually supposed to have to do the ritual