Many thanks to all of your answers Guys. I was not able to answer during this week. I would also think that you could lighten the wight of the metal by itself, without auram requisites. It seems coherent, with many other spells, in fact you can shrink terram items, reducing its wight and volume. I though it could be similar maybe another teqnique, but that it should be doable. I was thinking more in changing one property of the iron armor by making it be like aluminium, or any other metal lighter. But i was not sure if you could do something like that with Muto. Yet you had really good ideas with that Perdo requisite.
Also It´s my first time using a Terram specialist Metal Focus Verditius. My magus wanna by like a Knight in the end, he is very young for a Magi (around 33-35) do not remember it by heart right now. My tequiques are around 13, but for rego that is 17. Also my forms, Terram is around 20 and i have plenty of tratacti, Animal, Herbam, Ignem are around 10, the rest are a bit lower, but all above 5, Maybe there is another one that is also higher I can´t remember now.
I was trying to build a metal chest and have an AC of it, and also of a place in the Covenant. My idea was to be able to teleport it from anywhere to my covenant or to me creating two spells to be able to teleport it. Also I am trying to level up some animal, herbam, corpus, aquam and so on to try to convert any of them to metal, so that i can muto them to metal, and then teleport the whole metal chest anywhere. Also, like a big metal chest would be tough to teleport I though about shrinking it a lot.
I found a problem, I realized that probably moving the whole metal chest would be a spell above 50, what do you think, unless I shrink the chest and all it contents a loooooooot. I do not want a 50 spell due to it becoming ritual, and also I am unable to reach. THe other option was to enchant the chest, but I can´t get it done in one season. And I was thinking that to make it a Invested Item was too much. I had not more ideas to it. And I thought that creating many items to make it work, would be a lot cheaper.
If you have any idea to upgrade my idea or any other good ideas I would be glad to hear. By the way the chest idea was due to was needs of food and so on, my Covenant overproduces food, and we convert it to lead, (we ruled that is not volume, but weight what is being transformed, so this way we reduce a lot it volume and as metal does not go to waste …
Many thanks everyone!!