Firstly, tapping creatures to Station something can only be done on your turn at sorcery speed, doing so will put a counter on that card based on the total power of the creatures you tapped, and once a threshold is met, the card will gain access to new abilities
The ones included here are an Amber/Emerald deck and an Amethyst/Ruby deck
Level 3 "Mermail" monsters are all female Aqua monsters, Level 4 "Mermail" monsters are all male Fish monsters and Level 7 "Mermail" monsters are all Sea Serpent monsters, except for the Aqua "Mermail Abyssbalaen" and "Mermail Abyssteus"
Fortunately, theres a pretty good story behind all the hype
22 Worthless: Larvae Moth (99 Cents) A near worthless level two monster that cant be normally summoned and can only be summoned with a Petit Moth equipped with a cocoon of evolution
Yuriko, the Tigers Shadow Yuriko, the Tiger's Shadow | Illustration by Yongjae Choi Commander (1) Creature (29) Baleful Strix Changeling Outcast Dauthi Voidwalker Dimir Infiltrator Faerie Seer Fallen Shinobi Gingerbrute Grazilaxx, Illithid Scholar Gudul Lurker Higure, the Still Wind Ingenious Infiltrator Ink-Eyes, Servant of Oni Mist-Cloaked Herald Mist-Syndicate Naga Mistblade Shinobi Moonblade Shinobi Mothdust Changeling Ninja of the Deep Hours Okiba-Gang Shinobi Ornithopter Sakashima's Student Silent-Blade Oni Skullsnatcher Slither Blade Tetsuko Umezawa, Fugitive Throat Slitter Tormented Soul Triton Shorestalker Walker of Secret Ways Instant (16) Brainstorm Commit / Memory Counterspell Cyclonic Rift Deadly Rollick Dig Through Time Familiar's Ruse Fierce Guardianship Lim-Dl's Vault Misdirection Murderous Cut Mystical Tutor Negate Otherworldly Gaze Swan Song Vampiric Tutor Sorcery (9) Demonic Tutor Devastation Tide Karn's Temporal Sundering Ponder Scheming Symmetry Sea Gate Restoration Temporal Mastery Temporal Trespass Treasure Cruise Enchantment (4) Aqueous Form Leyline of Transformation Cunning Evasion Smoke Shroud Artifact (8) Arcane Signet Dimir Signet Lightning Greaves Maskwood Nexus Scroll Rack Sensei's Divining Top Sol Ring Talisman of Dominance Land (33) Access Tunnel Clearwater Pathway Command Tower Dimir Aqueduct Drowned Catacomb Halimar Depths Island x8 Morphic Pool Mystic Sanctuary Polluted Delta Reliquary Tower Rogue's Passage Shipwreck Marsh Sunken Hollow Swamp x9 Temple of Deceit Undercity Sewers Watery Grave Yuriko, the Tigers Shadow has recently become one of my favorite commanders in my collection
