While they obviously didnt intend rarity symbols from the very start, when they made that decision is the most important information we could possibly get
Q: I have a Sigil Captain and a Glorious Anthem in play, then play Spectral Procession
When Zacama, Primal Calamity enters the battlefield, if you cast it, untap all lands you control
Apparently, Eureka up above in Green isn't the only Einstein reference here, because the dude shows up in Presence of the Master here

Human" "Ryu-Ran" "Dragon Seeker" "Dragon Statue" "Dragon Capture Jar" "Dragon Zombie" "Alligator's Sword Dragon" "Dragon Treasure" "Flying Kamakiri #1" "Trap Master" "Dryad" "Dream Clown" "Winged Dragon,Guardian of the Fortress #1" "Tornado Wall" "Tornado Bird" "Kurama" "Trent" "Dorover" "Doron" "The Melting Red Shadow" "The Thing That Hides in the Mud" "Nightmare Scorpion" "Night Lizard" "Misairuzame" "Mysterious Puppeteer" "Mystery Hand" "Upstart Goblin" "Needle Ball" "Needle Worm" "Two-Headed King Rex" "Three-Legged Zombies" "Slate Warrior" "Beastking of the Swamps" "Eatgaboon" "Neck Hunter" "Nemuriko" "Sleeping Lion" "House of Adhesive Tape" "Fiend Sword" "Burglar" "Mystic Clown" "Hard Armor" "Harpie's Brother" "Darkfire Soldier #1" "Molten Destruction" "Lava Battleguard" "Swamp Battleguard" "Harpie's Pet Dragon" "Harpie's Feather Duster" "Harpie Lady" "Cyber Harpie" "Harpie Lady Sisters" "Spirit of the Harp" "Bio-Mage" "Bio Plant" "Lady of Faith" "Graverobber" "Graverobber's Retribution" "Versago the Destroyer" "Destroyer Golem" "Bell of Destruction" "Steel Shell" "Call of the Grave" "Gravedigger Ghoul" "Gravekeeper's Servant" "Numinous Healer" "Bombardment Beetle" "Attack and Receive" "Two-Pronged Attack" "Buster Blader" "The Emperor's Holiday" "The Unhappy Maiden" "Bat" "Happy Lover" "Patrol Robo" "Haniwa" "Hane-Hane" "Meotoko" "Berfomet" "Premature Burial" "Hayabusa Knight" "Rose Spectre of Dunn" "Giant Trunade" "Hurricail" "Barox" "Parrot Dragon" "Amphibian Beast" "Hungry Burger" "Hunter Spider" "Widespread Ruin" "Hamburger Recipe" "Final Flame" "Bean Soldier" "Swords of Revealing Light" "Banisher of the Light" "Horn of Light" "Lightforce Sword" "Fairy Guardian" "Book of Secret Arts" "Hysteric Fairy" "Big Insect" "Big Shield Gardna" "Fire Princess" "Twin-Headed Fire Dragon" "Man-Eating Plant" "Man-Eating Treasure Chest" "Man-Eater Bug" "Hitodenchak" "Sparks" "Hibikime" "Humanoid Slime" "Humanoid Worm Drake" "Hyo" "Flash Assailant" "Hyosube" "Anti Raigeki" "Appropriate" "Fire Eye" "Firewing Pegasus" "Fire Kraken" "Fire Sorcerer" "Fire Reaper" "Hinotama" "Synchar" "Dark Witch" "Red-Moon Baby" "Vishwar Randi" "Exodia the Forbidden One" "Left Leg of the Forbidden One" "Left Arm of the Forbidden One" "Right Leg of the Forbidden One" "Right Arm of the Forbidden One" "Binding Chain" "Boo Koo" "Kazejin" "Fairy Dragon" "Riryoku" "Riryoku Field" "Follow Wind" "Insect Imitation" "Ancient One of the Deep Forest" "Kappa Avenger" "Swordstalker" "Petit Angel" "Petit Moth" "Petit Dragon" "Supply" "Fusionist" "Fusion Gate" "Flying Fish" "Flying Kamakiri #2" "Bracchio-raidus" "Pragtical" "B

We're not even a MINUTE in and this is already bullshit: If you stay and listen for too long, you get forced into a cutscene that pushes you towards the later opponents without giving you the chance to play for better cards