If you love Mew, this card may be a tricky one to add to your collection
If the discarded card was a creature card, amass Orcs 1
I like Map tokens as a way to make already pushed creatures explore because explore creatures are usually below rate to account for the mechanic
Sounds like a normal core set to me

Ajani's Comrade Alistair, the Brigadier Anafenza, the Foremost Aragorn, Hornburg Hero Armament Corps Attendant of Vraska Bant Sojourners Bant Sureblade Bristlebane Battler Burrowguard Mentor Byrke, Long Ear of the Law Caldaia Guardian Captain Sisay Captain Sisay Citanul Stalwart Cloud, Ex-SOLDIER Conclave Sledge-Captain Crowd-Control Warden Dai Li Agents Dauntless Escort Dryad Militant Earth King's Lieutenant Earth Kingdom General Earth Kingdom Soldier Earth Village Ruffians Earthen Ally Entourage of Trest Erstwhile Trooper Gaea's Courser Galadhrim Brigade Garenbrig Squire Giltspire Avenger Gloryscale Viashino Guardian Shield-Bearer Guerrilla Gorilla Hajar, Loyal Bodyguard Haldir, Lrien Lieutenant Haliya, Ascendant Cadet Inspirited Vanguard Ironroot Warlord Joraga Auxiliary Jungle Patrol Karvanista, Loyal Lupari King Darien XLVIII Kithkin Daggerdare Kynaios and Tiro of Meletis Lady Zhurong, Warrior Queen Lagrella, the Magpie Leonin Armorguard Llanowar Cavalry Loxodon Smiter Meltstrider Eulogist Meng Huo's Horde Meng Huo, Barbarian King Merfolk of the Depths Mirrormere Guardian Owen Grady, Raptor Trainer Park Heights Maverick Perimeter Patrol Perrie, the Pulverizer Preston Garvey, Minuteman Primal Whisperer Ranger en-Vec Rhox Bodyguard Rhox Charger Rhox Maulers Rhox Pummeler Roon of the Hidden Realm Rosemane Centaur Salt Road Quartermasters Saskia the Unyielding Scalebane's Elite

Duskmourn: House of Horror [Haunted Realms, Graveyard Tricks, Psychological Terror] Dive into spine-tingling fun with the Duskmourn: House of Horror Commander Decks four preconstructed 100-card decks, each dripping with eerie flavor and unique strategies