Palafin ex is illustrated by Tetsuo Hara
You can also use the Lucario from Space-Time Smackdown
There's no point in the game where I probably won't be able to think of two cards I'd be happy to tutor for
Sure, there is the Illumineers Quest box (a separate product) that is all about fighting Ursula, but it still feels like a miss to not have either deck lean into that theme

Aron, Benalia's Ruin Ascendant Evincar Atraxa, Grand Unifier Atraxa, Grand Unifier Atraxa, Praetors' Voice Ayara, Furnace Queen Belbe, Corrupted Observer Brimaz, Blight of Oreskos Brudiclad, Telchor Engineer Commander Greven il-Vec Drivnod, Carnage Dominus Elas il-Kor, Sadistic Pilgrim Elesh Norn Elesh Norn, Grand Cenobite Elesh Norn, Mother of Machines Ertai Resurrected Ertai, the Corrupted Etali, Primal Sickness Ezuri, Claw of Progress Ezuri, Stalker of Spheres Gallowbraid Geth, Lord of the Vault Geth, Thane of Contracts Gix, Yawgmoth Praetor Gix, Yawgmoth Praetor Glissa Sunslayer Glissa, Herald of Predation Glissa, the Traitor Greven, Predator Captain Heliod, the Warped Eclipse Ich-Tekik, Salvage Splicer Ixhel, Scion of Atraxa Jin-Gitaxias Jin-Gitaxias, Core Augur Jin-Gitaxias, Progress Tyrant K'rrik, Son of Yawgmoth K'rrik, Son of Yawgmoth Karumonix, the Rat King Keskit, the Flesh Sculptor Kethek, Crucible Goliath Kinzu of the Bleak Coven Malcator, Purity Overseer Migloz, Maze Crusher Mishra, Claimed by Gix Mishra, Lost to Phyrexia Moira and Teshar Mondrak, Glory Dominus Morinfen Omnath, Locus of All Ovika, Enigma Goliath Polukranos, Engine of Ruin Ria Ivor, Bane of Bladehold Rona, Tolarian Obliterator Selenia, Dark Angel Sheoldred Sheoldred, Whispering One Sheoldred, the Apocalypse Skithiryx, the Blight Dragon Skithiryx, the Blight Dragon Skrelv, Defector Mite Slobad, Iron Goblin Solphim, Mayhem Dominus Tekuthal, Inquiry Dominus Tsabo Tavoc Unctus, Grand Metatect Urabrask Urabrask the Hidden Urabrask, Heretic Praetor Venser, Corpse Puppet Vishgraz, the Doomhive Vohar, Vodalian Desecrator Volrath the Fallen

Because of my hypothetical ten turns to mill everyone out, wed need to be around thirteen cards from every other players deck from turn three onward