Just a random idea off the top of my head. I play lot’s of ARAM (League) and the little legends that follow me around is a nice little concept that I thought would be cool to implement here.
Axie’s could fill the pet slot and give +2 of a certain type of rarity score depending on its highest stats - eg. High speed stat = +2 agg
Just wanted to drop the idea here as food for thought
Maybe some breeding event from axie’s side?