So many caps, so many options
Iron: Useless as ever and now with an extra added chance for death and/or injury via explosion of the wand
Copper: Not ideal but still relatively useless to those that have access to the better stuff
Brass: This just reminds me of how old the versions of thuamcraft I use. Still it is nice to know there is a cheaper alternative to gold out there, assuming that it is cheaper.
Gold: Reliable yet expensive, sounds about as much as I expect from it.
Blessed steel: Definitely an attempt to try convert some to their order, probably best to keep a close eye on those that are using this cap you never know if they do buy into it
Enchanted cloth: Sometimes a simple solution is what is needed to improve things.
Sojourner: So simple, so elegant. Might be a bit of a bias on my end to hold these crystalline caps to such a high regard. Could be the aesthetics but I digress it is good to see that it is a practical cap.
Mechanist: There is something about a cap that was simply designed to destroy a node that I thoroughly enjoy to see here, probably cause I have resorted to destroying tainted nodes in the past
Thaumium: Thaumium you disappoint me. I did not expect to see you be so brittle to constant use. Then again I should have seen that coming, it isn't exactly the most complex thing that one can just mass produce.
Manasteel: I never really thought much about the creation process of this stuff till reading this and the more I think about it the more the description of "iron doused in copious amounts of seemingly random vis" seems to fit.
Thauminite: Improvement of the original, nothing else needed to be said.
Crimson stained: I have heard of blood sacrifices to gain power just was not expecting to see it. At least it is a banned practice.
Voidmetal: Corrupting the weak of mind but at least it can channel vis efficiently. I like how it seems that there is a double restriction on whom can get that these caps.
Charged Elarium: I do like how you have this stuff as seemingly ancient with no one seeming to know how it can even be made with just the only form of gathering it is simply trying to scavenge what already exists. Makes sense why they would not use it for caps.
Shadow-Imbued: Another simple solution to achieve a better level of efficiency. Even if just the blackcoats are allowed to use them.
Shadowmetal: Rare and difficult metal to get with a long process to shape it into a cap. I can see why it is just available to so few. Nothing else to add.
Primal cap: A replacement to the powerful ichorium and yet this is by all means impossible to acquire, cause it is just a concept, still seeing as to what the pearl can already be applied to I say that this is feasible.