Modding

Good day, gentlemen! 1) How do I add new artifacts to a map? I tried to create a new artifact by creating a new xdb file in the MapObjects\Artifacts\ folder (similar in content to all the existing ones) with the properties of the object on the map and a link to GameMechanics\RefTables\Artifacts.xdb, where I also added a new entry. What am I doing wrong? I was only able to change the properties of one of the existing artifacts. Does this mean that there are other files that I simply haven't found, which also require changes? 2) Where are the properties of artifacts that do not affect the hero's stats stored? In the above-mentioned file, GameMechanics\RefTables\Artifacts.xdb, there is no information about artifacts that grant spells, immunity to them, etc. I would also like to change this.