[Solved][1.15.2] Adding elemental properties to LivingEntities in Modder Support Posted June 18, 2020 What is the purpose of this capability? Unless I understood you wrong, you just need other mods to tell you what elements their mobs are. This can be done with datapacks. You load all the datapacks into a Hashmap<String,ElementData> where string is the mod id. And when you want to know mob's resistances, you just check that map. Entity Capabilities are for saving mob specific data, a hashmap works fine if that data is set at startup and same for each mob type.