This is, in theory, a great catch-up tool for Mono-Black midrange against faster strategies
My other preview is mythic rare
This can be applied retroactively

Aggressive Mammoth Araba Mothrider Autarch Mammoth Battle Mammoth Beacon Behemoth Befriending the Moths Behemoth Sledge Behemoth of Vault 0 Behemoth's Herald Benthic Behemoth Big Mother Mouser Blinkmoth Infusion Blinkmoth Nexus Blinkmoth Urn Blinkmoth Well Borderland Behemoth Brambleweft Behemoth Cliffrunner Behemoth Coliseum Behemoth Craterhoof Behemoth Deathless Behemoth Domesticated Mammoth (playtest) Dragon Broodmother Drownyard Behemoth Duskana, the Rage Mother Elesh Norn, Mother of Machines Eye of Yawgmoth Faerie Guidemother Faerie Guidemother Froghemoth Fungal Behemoth Gix, Yawgmoth Praetor Gix, Yawgmoth Praetor Goldenglow Moth Grandmother Ravi Sengir Grandmother Sengir Hawkeater Moth Hit the Mother Lode Honey Mammoth Hydaelyn, the Mothercrystal Imperial Moth Inkmoth Nexus Inversion Behemoth Ishkanah, Broodmother K'rrik, Son of Yawgmoth K'rrik, Son of Yawgmoth Kabuto Moth Kalonian Behemoth Kazandu Mammoth Kiora, Behemoth Beckoner Lazotep Behemoth Llanowar Behemoth Luminous Broodmoth Luminous Broodmoth Mammoth Bellow Mammoth Growth Mammoth Harness Mammoth Spider Mammoth Umbra Maze Behemoth Moonwing Moth Morkrut Behemoth Mothdust Changeling Mother Bear Mother Kangaroo Mother of Goons Mother of Runes Mothers Yamazaki (playtest) Mothrider Cavalry Mothrider Patrol Mothrider Samurai Mothwing Shroud

They all can control the board and disrupt the opponent's hand
Unfortunately for the humans, the monsters of Ikoria have begun to mutate and the fortresses that were previously successful at protecting humans have now become fodder for the monsters to annihilate