I have all the S rank skills of all pets except for Adventure Pet - Rare Catalyst drop chance.

Every week I've been buying the pet summons on shop using gold (5.5m every week) but no luck on getting that S skill.

Maybe if the panda pet that we can buy using real money is giving us an option to choose any battle type S skill, maybe players will buy it specially who struggles on finding the S skill they want.

Also adding a lobby type pet with this idea is a good marketing strat.