I have played Ars Magica with the direwolf20 pack for a long time, stopped a month or two ago and started again, playing 1.4.7 of both driewolf and ars magicka. I noticed, that the fabricator essence is still kinda messed up. I can place one lapis block in there and create 9 lapis lazuli out of it for a cheaper cost then the crafted lapis block is worth, ergo unlimited essence with no effort. I could also just produce a dye, wool and push in colored wool, which is also more worth then the price of the raw material. Did that get fixed in the newer version of ars magicka? Also with xenos reliquary I can just dupe emeralds by using one lapis block, which will get me more mystcraft pages and in return more generated structures and raw material (i.e. diamond worlds).