Firstly, you can currently only trade cards of a one Diamond, two Diamond, three Diamond, four Diamond, one Star, two Star, one Shiny and two Shiny rarity
4 Fishbone Quill Ink Twice Per Turn Fishbone Quill is even better than Great Stone Dragon, since it skips the part where you need to have something in the discard for the extra ink
For example, if you are sorting the A cards, a card like Audacious Infiltrator might go in the U cell
While it starts with 3000 attack, Avramax can gain attack equal to the attack of any special summoned monster it battles
Try to switch to a wired connection instead of a wireless one
In my quest to learn, collect and discuss topics from everyone - I cant believe I never heard or was drawn to the Dragon Vault subset series