Ok, so I'm on Destiny Islands and I need a Lv 2, a Lv 8 and a Key of Beginnings to open the first Event door, only I don't have a Lv 2 card, and I can't seem to find it. Is there a way to get cards the level you want? Thanks in advance.
Explore everywhere. You can hit doorways you've already been through to use a different card and put more enemies in there. I ended up maxing myself out on map cards tons of times by just exploring every room in every world.
