I would advise that players only disenchant enchantments as a last resort (as in you have nothing else to disenchant) enchantments don't give you very many spell fragments compared to summonings or instants. I would say the order of priority should be to look at your summonings first, instants second and enchantments last. In each case you want to avoid the items you think you'll likely need to use in the near future. To gain enough spell fragments for an event quest asking for spell fragments you might need to disenchant 10 or more enchantments where as you can usually get the required fragments from one or two summonings (3 at the most when using small summonings). Enchantments are spells you deliberately make for use in your city and so it makes little sense to disenchant them unless you have no other choice. If you're new you may not have very many or even any summonings in your inventory but most people have a collection of items they don't really need or don't have room for in their city. Instants are another option but like enchantments they're likely to be needed in the near future and their spell fragment yield while greater then enchantments are less then summonings. When deciding to disenchant summonings you want to be careful what you pick. Avoid highly useful summonings such as wishing wells or buildings that are part of linked sets or that can be evolved. You would also want to avoid buildings that give you things such as goods, population, coins, supplies, mana, etc. Ones that just give you culture are your first best choice. The ones I suggest to avoid will be the most tempting as they'll be the ones that will give you the most fragments. Now if you've been lucky and won a bunch of wishing wells for example and have like 10 or 20 in your inventory then using one of them is probably okay. Having that many you'll likely win more to replace the one you used before you've used all the others in your city. If you do have to use enchanments you want to avoid the most important ones such as pet food, magical manufacturing and combining catalysts. Unfortunately the best ones to use are also the ones that give you the least fragments but they'll also be the ones you'll miss the least. When possible the ensorcelled endowment is the best one to choose for disenchantment. They're fairly cheap and quick to make and are the least important of your enchanments as far as what they can do for you when used the way they're meant to be used.