Gyarados is a beautiful card with a powerful attack, but it takes quite a bit of set-up, which mostly revolves around keeping Magikarp alive long enough to get Gyarados into play
Its not just about the cards or the boxesits the shared rituals
The most common mistake is filling the plan slots first and treating the functional categories as optional
I have an uncut sheet I was able to get to it has all the holo cards on it so you can see them there

The Other boxes are marked as 'Non-Standard Sets' and also contain mostly uncommon cards with some commons) Set - Box Commander Uncommons - * Conspiracy - ** Modern Horizons 1 - ** Modern Horizons 2 - *** Balders Gate - *** Lord of the Rings - ***, **** Double Masters - **** Modern Horizons 3 - **** Return to Ravnica - F Gatecrash - F Dragon's Maze - F Magic 2014 - F,G Theros - G,H Born of the Gods - H.I Journey into Nyx - I Magic 2015 - I,J Khans of Tarkir - J Fate Reforged - K Dragons of Tarkir - K Magic Origins - K, L Battle for Zendikar - L Oath of the Gatewatch - L,M Set - Box Shadows over Innistrad - M Eldritch Moon - M,N Kaladesh - N,O Aether Revolt - O Amonkhet - P Hour of Devastation - P,Q Ixalan - Q,R Rivals of Ixalan - R Dominaria - S,T Magic 2019 - T,U Guilds of Ravnica - U Ravnica Allegiance - U,V War of the Spark - V,W Magic 2020 - W,X Throne of Eldraine - X,Y Theros Beyond Death - Y Ikoria: Lair of Behemoths - Y,Z Magic 2021 - Z Zendikar Rising - Z,1 Kaldheim - 1 Strixhaven: School of Mages - 2 Adventures in the Forgotten Realms - 2,3 Set - Box Innistrad: Midnight Hunt - 3,4 Innistrad: Crimson Vow - 4 Kamigawa: Neon Dynasty - 4,5 Streets of New Capenna - 5,6 Dominaria United - 6 The Brothers War - 7 Phyrexia: All Will be one - 8,9 March of the Machines - 9 Lost Caverns of Ixalan - 10 Murders at Karlov Manor - 10 Outlaws of Thunder Junction - 11 Bloomburrow - 11 Dusckmourn - 11,12 Foundations - 12 Aetherdrift - 12,13 Tarkir: Dragonstorm - 13 Final Fantasy - 14 Edge of Eternity - 14 Spider-Man - 14 Legacy & Modern Boxes (Legacy boxes are marked 'Legacy'

In any form, this card is a white-blue Legendary Creature Human Artificer with the ability to buff creatures (+1/+1) for each Artificer you control, and for each Artificer card in your graveyard