Ideally, WotC would like to not be shake up formats with bans and unbans, but across formats ranging from Alchemy to Vintage, there has often been a couple a year for a while
Its an obvious, but cute joke

WHITE | BLUE | BLACK | RED | GREEN MULTICOLORED | ARTIFACT | LAND | ALL CARDS WHITE Coppercoat Vanguard Deification Harnessed Snubhorn Metropolis Reformer Spark Rupture Tazri, Stalwart Survivor BLUE Filter Out Tolarian Contempt Training Grounds Vesuvan Drifter BLACK Ayara's Oathsworn Blot Out Death-Rattle Oni Markov Baron Urborg Scavengers RED Arni Metalbrow Kolaghan Warmonger Plargg and Nassari Reckless Handling GREEN Animist's Might Leyline Immersion Nissa, Resurgent Animist Open the Way Tranquil Frillback Undercity Upheaval MULTICOLORED Calix, Guided by Fate Campus Renovation Cosmic Rebirth Danitha, New Benalia's Light Feast of the Victorious Dead Gold-Forged Thopteryx Jirina, Dauntless General Jolrael, Voice of Zhalfir The Kenriths' Royal Funeral Kiora, Sovereign of the Deep Nahiri, Forged in Fury Nahiri's Resolve Narset, Enlightened Exile Nashi, Moon's Legacy Niv-Mizzet, Supreme Ob Nixilis, Captive Kingpin Pia Nalaar, Consul of Revival Rebuild the City Rocco, Street Chef Samut, Vizier of Naktamun Sarkhan, Soul Aflame Sigarda, Font of Blessings Tyvar the Bellicose ARTIFACT Karn, Legacy Reforged LAND Drannith Ruins WHITE | BLUE | BLACK | RED | GREEN MULTICOLORED | ARTIFACT | LAND | ALL CARDS

That's what makes adventure cards good: you dont have to choose one or the other You can bounce something and always have a 3/1 flyer in your back pocket for later
Typically, winning with this deck means taking out opponents one at a time
Nice icy fuzz on the spider that presumably allows it to camouflage itself in the icy wastelands