Essence of theMystical Mysterious Treehouse Mage Tower

By drinking this essence a treehouse mysteriously appears on a tree in your backyard, if you don't have a backyard, you can go through a portal in your closet and enter a generic backyard of a generic house in a generic neighborhood. (There is a magical boundary surrounding the house, that prevents anyone else from noticing anything going on inside it.) Or you can touch a plant in your house and appear inside the tree house.

• Anyone looking from the outside of your house can see the ordinary tree house, but the mage tower is invisible and is in a separate dimension that occupies the space between spaces, so planes go through the space your tower occupies without any problems.

• The first level of the tower has things (magical plants, reagents, animal parts, animals,etc)and spellbooks found in a low fantasy world and the higher you go, higher the magic present in things and spellbooks.

• The books contain magical theory and spells common in a generic fantasy setting corresponding to the floor of your tower, anythings from a specific setting would be converted to function on a general magical metaphysics, instead of needing a specific macguffin.

• All the used items get replenished the next time you enter that floor and the tower magically maintains its neatness, apart from these there are homunculi and golems to take care of the specific tasks. You can modify their appearance anytime you want.

• Time can be slowed down when you're inside the tower and you can learn anything at 1000 times your normal speed.

• You can learn anything you want, without any problem and modify it based on your knowledge.

• You can use the equipment inside to brew potions, enchant things in person or let the default enchantments in the tower create generic but quality equipment and things for you. If you want something more personalized, you have to put in some effort.

• You can allow others to enter the tower, but can remove their entry privileges anytime and erase their memories about the tower.

• As a result of the vast amount of magic inside the tower, the tower has become a living object. Living objects can form a humanoid physical body to act as a conduit, but their soul is spread over their original body and can control all aspects of their original body with just a thought. The personality of the tower would be according to your specifications.