So you're try to write a fanfic where one of the main characters is an OC. And this OC isn't some powerless earth pony, either- maybe it's a unicorn with an entire library of tricks up his/her sleeve, or a alicorn with an armory of godlike powers! Surely a character like that would have many powers the reader would need to hear about- but how would you introduce them?
Would you list their equipment and abilities at the beginning, or do you try to introduce them as they become relevant? Do you try to reference the character learning the abilities as you go along? Whatever your technique is, what do you do to try to make it seem fluent?
PS. No, I'm not trying to ask for advice personally, I'm just curious how other fanfiction writers introduce their OC's abilities.