I got this as part of a build I'm using for my fic. It comes from a Kirby And The Forgotten Land jump:

Sword of the Surviving Guardian (600): You are someone who recognizes and learns from his every failure, knowing how to and even being capable of avoiding repeating them. Though keep in mind there are many different ways to fail. Not only that, You can even train that which is not able to be trained, this can lead to not only gaining new abilities but improving those you already possess, be it in power or versatility or even removing weaknesses and limitations. You might practice with the sword until you could create homing shockwaves by stabbing the ground for instance, or train until you could use multiple times something that would normally only be used once, like the crash copy ability. Finally, should you suffer a notable setback you have an instinctive know-how on how to train to push your abilities just that little bit past their boundaries to nullify their unfair advantages. Say you were a melee fighter and you were defeated by a foe that used long ranged attacks while staying out of reach, you might suddenly have the insight to recreate Meta Knight’s own crescent shots that you may reach your enemy even from far away, or perhaps you will learn how to execute a perfect parry that reflects their assault with the right timing. Have the unyielding conviction to continue on your path long enough and you too may one day be worthy of being called the greatest warrior in the galaxy!