One card you should especially play Queen of Hearts, Wonderland Empress with is Hades, King of Olympus because of its Sinister Plot ability - which gives Hades, King of Olympus the chance to quest for an extra lore for each villain in play - thereby synergising perfectly with Queen of Hearts, Wonderland Empress
This version of the deck has a higher top-end than the other two, meaning maintaing card draw will be important as you climb up to seven ink and beyond
Power level - How well the cards play together in a standalone deck
When two cards (for example, Fang, Fearless l'Cie and Vanille, Cheerful l'Cie) are melded, the result is a single permanent (in this case, Ragnarok, Divine Deliverance) that's represented by two cards
One balance decision I can't seem to decide on is whether I want four copies of 003-195 or 001-195
Get ready for a magical weekend filled with exciting competition and memorable activities