Like some of the previously mentioned cards on this list, Brainstorm doesnt even increase your hand size

5 Traditional foil borderless scene rares (12.36%) 1 Traditional foil borderless scene mythic rare (1.24%) 1 Traditional foil rare or mythic rarecan be any of the following: 32 Traditional foil rares (82.05%) 14 Traditional foil mythic rares (17.95%) 1 Non-foil extended-art rare or mythic rarecan be any of the following: 16 Non-foil extended-art rares (97%) 1 Non-foil extended-art mythic rare (3.0%) 1 Traditional foil rare or mythic rare that's an alternate-frame, extended-art, or borderless card, or one of the following: 2 Traditional foil borderless rares (4.95%) 8 Traditional foil borderless mythic rares (9.91%) 14 Traditional foil showcase memory corridor rares (34.67%) 5 Traditional foil showcase memory corridor mythic rares (6.19%) 16 Traditional foil extended-art rares (39.62%) 1 Traditional foil extended-art mythic rare (1.24%) 5 Textured foil showcase memory corridor mythic rares (3.25%) 4 Double rainbow serialized cards (500 of each) 1 Foil-etched rare or mythic rarecan be any of the following: 32 Foil-etched rares (82.05%) 14 Foil-etched mythic rares (17.95%) 1 Traditional foil double-sided token *Note: Probabilities may not sum to 100% due to rounding

Ill put some of the highlights in order, then gold, just for people to know what they can expect out of these: Kenrith, the Returned King Akroma's Will Urza, Lord High Artificer Counterspell Cryptic Command Rhystic Study Yawgmoth, Thran Physician Bolas's Citadel K'rrik, Son of Yawgmoth Ragavan, Nimble Pilferer Ancient Copper Dragon Primeval Titan Atraxa, Grand Unifier Tymna the Weaver Isshin, Two Heavens as One Thrasios, Triton Hero #45
What made this a very popular spell over the years is the versatility that it offers since it's not just an expensive spell with a powerful effect that you might never get to play
1 : One or more of the following can be seen: creases, scratches, chips