All skills have a maximum level where no more levels can be bought with rupees. If I reach that level, then equip items that provide a bonus to that skill, does the bonus still apply (exceeding the "max")? Or is the bonus just wasted?
I decided to test this out using the spell card "Wind". The spell card's description when leveling it up:
The first part of my research was to test out the spell card when it was one level before the maximum, without using any equipment boosts. Here are the results:
Take note of the size of the wind. When I level up wind so that it is at the maximum, the wind range and wind size should be increased. I will mainly be focusing on the wind size.
Here are the results of the spell card at the maximum level, with no equipment boosts. As you can see, this one is slightly larger.
I tried my best to take the screenshot while both were in the same area. I also tried to get the character in the same position by running all the way to the left and then lightly tapping the right arrow key.
Next, I added some equipment boosts to the next level in order to see if there would be any changes. I used Spellmaster Cap in my hat slot, which gives a +1 to all cards, including wind. For my necklace slot, I used Thor's Hammer, which gives a +4 to all wind cards. Finally, for my ring slot, I used Hurricane, which gives a +2 boost to all wind cards.
Here are the results of the wind card with a +6 boost.
Now, to take a closer look at the green shapes and their sizes, I have zoomed in on each image, taking the photo in the exact same spot.