This is a nice, though stereotypical alchemical process. I have seen loads and loads of variants on this and even though I dislike many of the names herein (Dracorex steel, tincture of Moly, etc) I do think the attention and detail in this post warrants a 4.5.
What is fabulous about your works is that it is so very THOROUGH. Much of your stuff can be grabbed by a GM and inserted right into his/hers setting. I think many appreciate that. Go to Comment
Very good. The GM can think up of the exact mechanics, but in general the mages get their asses handed to them. Normally in D&D, wizards and sorcerors dominate the battelfields at higher levels, making noble paladins and valorous fighters just meatshields. This can rectify thst. If instead the secret is not of the Alchemists' Guild but an ancient shamanic ritual, then it is just right for my 'Wild West'-barbarians versus the Imperial Magocracy. Go to Comment
Plant that is likely to produce allergic reactions in almost everybody, even by touch. Usage: medicinal, in very exotic foods, non-lethal traps, disabling opponents (have you ever cut an onion,anyway?), spell components, etc.