this is super last minute, hope its not too late, but a couple Ideas for my favs
Corviknight Crest - Defense is used to calculate its physical attacks, and grants an ability akin to stamina, where getting hit by physical (maybe contact moves only since corviknights already pretty solid) boosts defense by 1 stage
edit note for corviknight crest: to keep it balanced so people dont just run 252 hp 252 def and start obliterating everything while also nearly never dying, every time its def is raised (even through its own buffs like iron defense) its special defense and speed lower by the same a
