Season 7 Frost Skin + Season 6 Shining

The GoGo Adventurer and Royal Deliveryman are Season 8 Shining. (Season 7 is missing lol) The animal mount is the Season 7 Frost Festival outfit. Since gacha tickets carry over, if you're lucky you might get it without spending money, but otherwise, you need to save up and go all-in on the skin you want to get the full set. To give you an idea, it took 600 pulls to get the full Season 1 Forest set...