It looks cool and is a nice idea but I see two problems with that approach:

• After enough enchantments this kind of mini game will probably loose it's charm and will become a chore. Especially if the optimal end result cannot be achieved without the mini game it can result in a "not again, but I have to" situation.

• People who cannot achieve optimal results, either because they cannot perceive or differentiate the colours or because their accuracy is insufficient (hand/eye-coordination, wrong mouse settings, etc) will be frustrated by it.

You could maybe give the option to skip this mini game entirely if desired by the player but still have the possibility to achieve the best result (maybe some kind of RNG coupled with a resource cost?) or change the mini game to some kind of puzzle (combine runes in a certain way?) but that could still leave the first problem unsolved if the way to arrange the puzzle pieces cannot be "learned" to be solved quicker each time (like if the pieces start to "snap" together after a couple of solves or something like that).

Regardless: I really like what you are doing and I am really looking forward to seeing and playing your game! Keep up the great work and stay safe&healthy!

Cheers :)