If they fail to pay for cumulative upkeep when they're in control of it, they lose 20 life
(Some of them would take up more room than we have in the text box by themselves, but you probably won't control that many lands.) In case you do end up with more than 31 lands, the remaining prime numbers below 100 are 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97
This reflected very well in the color combinations (well, except for the last one, I guess), giving us a template for the four featured MTG Final Fantasy cards on this list
Cold foiling as compared to other types is a more modern process of adding foil
Full decklists for the Welcome Decks can be found here
While I think the story is a bit lacklustre and I have no clue where its going