Some of the items in my game are extremely rare. I'd like them to only be usable once and afterwards if you manage to find another and try to use it, it will instead give you a message saying that you already have it. I have a pet system that is very nearly complete save adding more pets and where you can find them. I just need to make it so you can't summon more if you already have one pet. I'll include the map so you can take a look at the system. After the naming and gender choosing parts, you'll find 2 items in front of your character. I need it so that if you already have the pet, you cannot summon it again. My pet menu system is working great, I just need the items to work as well. Thanks so much for any help!