In the Eye of Chaos ($193) Blue players are hated for their counterspells, and even if In the Eye of Chaos doesnt just hate on instants, its still a bit unusual to see it in blue
These all act as either combo pieces to help your deck, or simply give you effects to help push advantage further

Akron Legionnaire Ali from Cairo Ambush Party Amnesia Ancestral Recall Ancestral Vision Ancient Cornucopia Apocalypse Chime Arctic Foxes Artifact Blast Ashnod's Battle Gear Ayula, Queen Among Bears Balance Balduvian Barbarians Barbed Foliage Bilbo's Ring Birds of Paradise Black Poplar Shaman Boggart Sprite-Chaser Bountiful Landscape Bring to Light Bronze Horse Burrowing Cancel Cathedral of Serra Chromatic Armor City of Brass Commander's Sphere Concordant Crossroads Counterspell Country Roads Courier Hawk Crop Rotation Crusade Death Ward Dimir Aqueduct Dogmeat, Ever Loyal Dwarven Ruins Dwarven Weaponsmith Ebon Stronghold Echo Storm Elite Javelineer Elven Fortress Elvish Hunter Elvish Scout Emeritus of Ideation Empyrial Storm Eternal Flame Exploration Eye for an Eye Farmstead Fastbond Fear Festival Foratog Forest Formless Genesis Foul Orchard Fowl Play Fraction Jackson Fury Storm Gaea's Touch Gemstone Caverns Gemstone Mine Genesis Storm Goblin Ski Patrol Grave Titan Great Defender Halls of Mist Havenwood Battleground Heroism Howl from Beyond

Well start off with the star of the show, Tomato Control
Its high value is driven by a low graded 10 population of just a few dozen and the high attrition rate of these fragile, low-HP cards that were often lost to schoolyard play
Ugh, I thought to myself, this is a waste of time