Aquatic Alchemist Ashling's Command Ashling, Rekindled Ashling, Rimebound Ball Lightning Belion, the Parched Beza, the Bounding Spring Blazing Bomb Bramble Familiar Catharsis Champion of the Path Child of the Volcano Colorstorm Stallion Cosmogoyf Deceit Diamond Weapon Driftgloom Coyote Eclipsed Flamekin Eddymurk Crab Eirdu, Carrier of Dawn Elemental Mascot Eluge, the Shoreless Sea Emptiness Enraged Flamecaster Explosive Prodigy Fecund Greenshell Fire Elemental Flame-Chain Mauler Flamebraider Flamekin Gildweaver Flaring Cinder Fleeting Effigy Flourishing Bloom-Kin Frostbridge Guard Galewind Moose General Traag, Heart of Stone Gigastorm Titan Hearth Elemental Hivespine Wolverine Huskburster Swarm Hydro-Man, Fluid Felon Ice Flan Icewind Elemental Icewrought Sentry Isilu, Carrier of Twilight Kindle the Inner Flame Kithkeeper Kulrath Mystic Kulrath Zealot Lavaleaper Living Conundrum Luminollusk Lumra, Bellow of the Woods Magmakin Artillerist Maha, Its Feathers Night Mindsparker Molten Man, Inferno Incarnate Moonshadow Mossborn Hydra Mouth of the Storm Muldrotha, the Gravetide Muldrotha, the Gravetide Photon, Living Light Prismabasher Quaketusk Boar Remnant Elemental Rimekin Recluse Rock Soldiers Rotisserie Elemental Rottenmouth Viper Sandman, Shifting Scoundrel Scalding Viper

Agitator Ant Agitator Ant is deceptively simple, but super effective in multiplayer pods
But there are still some clear Day One ways you might try and break these cards: you could use the Hideaway trigger on Collectors Cage, or just make a ton of surplus mana with something like Growing Rites of Itlimoc
If he ever gets sick of the Trail, he can eat that, too
Its not printed by WotCs exclusive card printers, and its not sold in sealed products
Red and Black will have a field day with discarding big fatties, and reanimating them out, and lots of ways to generate lots of value off that mechanic