Yes, I just slightly modified the result of what needed to be done – but now it works with the visitor count. (I wouldn't have figured it out myself; smart people gave me the idea :). I left the object enabled and added a trigger. I will have 4 types with the same model (correspondingly, in the object description, there is +1 to defense, attack, magic, or knowledge + a charisma bonus). That's all! Regarding experience, it should have been removed because heroes will gain the main experience in quests, and the additional bonus to parameters will only increase the importance of obelisks.
So, the object is only disabled when the trigger is activated?