It is this very combination of locking out your opponent from summoning monsters and being completely unaffected by anything that has caused the TCG to completely ban it from their card pool
The downside of the massive cost makes it a tough card to play

Darklord Nurse Reficule Dice Jar Dimension Shifter Dinomight, the True Dracofighter Dogmatika Ecclesia, the Virtuous Dogmatika Maximus Dragon Buster Destruction Sword Eater of Millions Eldlich the Golden Lord Fairy Tail Luna Fossil Dyna Pachycephalo Gizmek Orochi, the Serpentron Sky Slasher Gnomaterial Inspector Boarder Jowgen the Spiritualist Knightmare Corurptor Iblee Mahaama the Fairy Dragon Michion the Timelord Necroface Link Apple Pandoras Jewelry Box Performapal Skullcrobat Joker Raphion the Timelord Sandaion the Timelord Sephylon, the Ultimate Timelord Subterror Guru Time Maiden Vanitys Fiend VanityS Ruler Wandering Gryphon Rider Zaborg the Mega Monarch Zap Mustung Zefraath Amorphactor Pain, the Imagination Dracoverlord Blue-Eyes Chaos MAX Dragon Cyber Angel Benten Herald of Perfection Herald of Ultimateness Megalith Phul Nekroz of Unicore Card of Demise Cauldron of the Old Man Chain Strike Dark Snake Syndrome Dimensional Fissure Domain of the True Monarchs Interrupted Kaiju Slumber Kaiser Colosseum Kyoutou Waterfront Nekroz Kaleidoscope Numbers Eveil Pacifis, the Phantasm City Pantheism of the Monarchs Pot of Duality Pot of Extravagance Pot of Prosperity Secret Village of the Spellcasters Sky Iris Terraforming And the Band Played On Anti-Spell Fragrance Bad Reaction to Simochi Banquet of Millions D.D

How is the deck positioned in the metagame
Think of Delta Species as the old-school version of Tera Pokemonjust without the fancy disco-ball crystal hats
4 BEST: Tempting Fate In the final duels in Battle City, Kaiba is up against Ishizu Ishtar, the woman who wields the Millennium Necklace and the one who gave him Obelisk the Tormentor before the tournament began