They are official Pokemon Company-released cards distributed only at prerelease events for upcoming sets, with a distinctive foil stamp marking them as prerelease exclusives
Fact or Fiction (T1, Ext, S, Block) R&D created the divvy mechanic in Invasion (taken from the card Raging River from Alpha) as a skill tester for players
Many Decks include monsters and effects that banish cards from their GY to use them
Its a way to get extra damage out of your creatures or simply keep looping them, and it severely punishes anyone who was foolish enough to let their life total drop too low
He wont have his loyalty abilities, and damage dealt to him wont cause him to lose loyalty counters
MTG Stimulus: Part 1 When the Federal Reserve bought up many billions of dollars of bonds, they infused a large amount of cash into the economy