Well technicality it is a skill but it can be modified into a technique anywho here's my idea
Okay this concept is simple pretty much how this works is first the technique goes back to the history of this object and use it to create I knew scale or ability based on the history of said item obviously the order the object is the more powerful it can become but also the more difficult it is to read Trace it you know Cindy would take a long time going through it and recorded it of course when you're done it goes to a sort of rebirth function refreshing the item back to it s peak as the cause of it is you cannot review history again at least not for a while he is possible to modify the technique to give you the experience this technique done through afterwards allowing you to get benefits from it the best part it can approve based on what it is meant to do for example let's say you have a farmer tool after going reverse and if you probably connected it to yourself the weapon will gradually come better at a job even the ability or skill granted to you will gradually improve and since you are connected to it you gain a sort of cut from it meaning you don't even need to do anything to become better at it since you gained the experience of said weapon for object of course they will be limitations such as at the very least at the beginning stages you are limited to how many you can connect to but as your realm improve / level up the more you can connect to and it works like a times effect (if you want to add that portion to it of course) allowing you to eventually have a whole entire army worth possibly giving you at all just imagine every single second you get the experience from objects without this limiter your brain will be filled with experience constantly so it makes sense why you should limit it right?
PS I know there is a similar one but I believe their version can only do one object for ever to be fair it can be any object they can think of but it's very limited in my opinion so I like techniques that more flexible in nature instead of just limited to one direction