We Could Be Immortals, card number 219, is a Song card (appropriately, given that its the name of the Fall Out Boy song that plays over the end credits of the animated super hero movie, Big Hero 6)
The only downside of this is if you happen to draw another one you will have to discard it when you sing it
(Of course, you can sleeve them up and play, but many collectors might keep these pristine.) If youre a die-hard fan of, say, Final Fantasy VII, you might grab the Limit Break deck in this edition to have a shiny, commemorative item featuring Cloud and company
As I mentioned when looking at Never Land - Mermaid Lagoon, I think the vanilla 1-cost locations with 1 lore are actually playable
When Zack dies, he can give +1/+1 and any equipment to any other creature
For example, the Simba - Future King card is different from the Simba - Returned King card, so a player could have four of each card in their deck