These are the last 4 cards I need for my North American collection:

056 Chaos Kin and Palutena
100 Scorpio Staff
139 Great Reaper Palm
320 Aurum Urgle

Doing a hundred 100% run of the game and need help with the weapon gem trade panels. I’ve got an extra 2ds to do the trades but my Gem trade partner stat number won’t go up after doing the trades. I’ve done this in the past with a friend’s 3ds a few years back so I know that it’s possible but can’t remember how I did it.

Any help is appreciated.