After having levelled to level 55 the NPC seems to have only lvl 60 recipes, despite the website here showing lvl 50 recipes to lvl till lvl 62 Assistant Skill.
I'm kinda stuck atm.. please some tips on how to further my Assistant Skill: Card master.
You can find recipes and their skill requirements and max skillups on nsDB in the Recipes section. Just go to that page, select Card Master in the filters at the side and click the blue Go button, and then you can order the recipes by Skill requirement or Max Skillups.