If youre unsure or just doing it for fun: If you simply want your favorite card graded as a keepsake (say, your childs beloved Pikachu), any of the three will do the job of preserving and authenticating
Speaking about the boosters was the lead designer, Gavin Verhey, who stated that, [Mystery Boosters] are probably the strangest non-silver bordered thing weve ever done. The Mystery Booster series curated list contains over 1,000, making it easily the largest set ever. The unconventional packs each follow the same basic structure, featuring: 1 playtest card (only in the Convention Edition) 2 commons/uncommons of each color 1 common/uncommon multicolored card 1 common/uncommon artifact or land 1 pre-M15 card in Magics original frame (can be a rare) 1 rare or mythic from M15 forward The playtest cards are perhaps the most interesting pieces in each pack

If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.) Legendary Creature - Dragon Scourge of the Throne Flying Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.) Whenever this creature attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures
What is a Red Super Alt-Art card