I really gotta look more into RPGMaker's documentation, because whilst looking for a solution to another event I was putting together, I ended up discovering the isStateAffected tag that would've made the Mimic easier to code. Oh well, it works at the end of the day lol
Legoguy9875Was going to try making the Mimic a map event, but I decided with what I had in mind that it would be easier for it to be in-battle only. Simply put, you have a limited number of turns to defeat the Mimic, otherwise your party member is lost. Visuals to come later of course