Name: Mask of Avacyn Cost: 2 Type: Artifact -- Equipment Rules Text: Equipped creature gets +1/+2 and has hexproof. (It can't be the target of spells or abilities your opponents control.) Equip {3} Set/Rarity: Innistrad uncommon, Commander Legends uncommon Price: $0.61

Name: Mask of Griselbrand Cost: 1BB Type: Legendary Artifact -- Equipment Rules Text: Equipped creature has flying and lifelink. Whenever equipped creature dies, you may pay X life, where X is its power. If you do, draw X cards. Equip {3} Set/Rarity: Magic Online Promos rare, Innistrad: Midnight Hunt Promos rare, Innistrad: Midnight Hunt rare, Innistrad: Double Feature rare, Duskmourn: House of Horror Commander rare Price: $0.57

Name: Mask of Intolerance Cost: 2 Type: Artifact Rules Text: At the beginning of each player's upkeep, if there are four or more basic land types among lands that player controls, this artifact deals 3 damage to that player. Set/Rarity: Apocalypse rare Price: $0.27

Name: Mask of Law and Grace Cost: W Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature has protection from black and from red. Set/Rarity: Urza's Destiny common Price: $1.40

Name: Mask of Memory Cost: 2 Type: Artifact -- Equipment Rules Text: Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.) Set/Rarity: Mirrodin uncommon, Planechase uncommon, Commander 2014 uncommon, Secret Lair Drop rare, The List uncommon, Commander Legends uncommon, Warhammer 40,000 Commander uncommon, Phyrexia: All Will Be One Commander uncommon, Final Fantasy Commander uncommon Price: $0.35

Name: Masked Blackguard Cost: 1B Type: Creature -- Human Rogue Pow/Tgh: 2/1 Rules Text: Flash (You may cast this spell any time you could cast an instant.) {2}{B}: This creature gets +1/+1 until end of turn. Set/Rarity: Core Set 2021 common, Ravnica: Clue Edition common, Foundations Jumpstart common Price: $0.04

Name: Masked Gorgon Cost: 4B Type: Creature -- Gorgon Pow/Tgh: 5/5 Rules Text: Green creatures and white creatures have protection from Gorgons. Threshold -- This creature has protection from green and from white as long as there are seven or more cards in your graveyard. Set/Rarity: Judgment rare Price: $0.39

Name: Maskwood Nexus Cost: 4 Type: Artifact Rules Text: Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.) Set/Rarity: Magic Online Promos rare, Secret Lair Drop rare, The List rare, Kaldheim rare, Kaldheim Promos rare, Commander Legends: Battle for Baldur's Gate rare, Modern Horizons 3 Commander rare, Bloomburrow Commander rare, Aetherdrift Commander rare Price: $1.07

Name: Mass Calcify Cost: 5WW Type: Sorcery Rules Text: Destroy all nonwhite creatures. Set/Rarity: Shadowmoor rare, Salvat 2011 rare, Magic 2015 rare Price: $1.93

Name: Mass Production Cost: 5W Type: Sorcery Rules Text: Create four 1/1 colorless Soldier artifact creature tokens. Set/Rarity: The Brothers' War uncommon Price: $0.06

Name: Mass of Ghouls Cost: 3BB Type: Creature -- Zombie Warrior Pow/Tgh: 5/3 Rules Text: Set/Rarity: Future Sight common, Tenth Edition common, Time Spiral Remastered common Price: $0.07

Name: Massacre Cost: 2BB Type: Sorcery Rules Text: If an opponent controls a Plains and you control a Swamp, you may cast this spell without paying its mana cost. All creatures get -2/-2 until end of turn. Set/Rarity: Nemesis uncommon, Magic Online Theme Decks uncommon, Secret Lair Drop rare, The List uncommon Price: $0.52

Name: Massacre Girl Cost: 3BB Type: Legendary Creature -- Human Assassin Pow/Tgh: 4/4 Rules Text: Menace When Massacre Girl enters, each other creature gets -1/-1 until end of turn. Whenever a creature dies this turn, each creature other than Massacre Girl gets -1/-1 until end of turn. Set/Rarity: War of the Spark rare, War of the Spark Promos rare, Secret Lair Drop rare, Ravnica Remastered rare, Outlaws of Thunder Junction Commander rare, Duskmourn: House of Horror Commander rare, Marvel Universe mythic Price: $0.28

Name: Massacre Girl, Known Killer Cost: 2BB Type: Legendary Creature -- Human Assassin Pow/Tgh: 4/4 Rules Text: Menace Creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.) Whenever a creature an opponent controls dies, if its toughness was less than 1, draw a card. Set/Rarity: Murders at Karlov Manor Promos mythic, Murders at Karlov Manor mythic, Lorwyn Eclipsed Commander mythic Price: $1.22

Name: Massacre Wurm Cost: 3BBB Type: Creature -- Phyrexian Wurm Pow/Tgh: 6/5 Rules Text: When this creature enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, that player loses 2 life. Set/Rarity: Magic Online Promos mythic, Mirrodin Besieged mythic, Core Set 2021 mythic, Core Set 2021 Promos mythic, Jumpstart 2022 mythic, March of the Machine Commander mythic, Murders at Karlov Manor Commander mythic, Duskmourn: House of Horror Commander mythic, Foundations mythic Price: $2.53

Name: Master Apothecary Cost: WWW Type: Creature -- Human Cleric Pow/Tgh: 2/2 Rules Text: Tap an untapped Cleric you control: Prevent the next 2 damage that would be dealt to any target this turn. Set/Rarity: Odyssey rare Price: $0.79

Name: Master Decoy Cost: 1W Type: Creature -- Human Soldier Pow/Tgh: 1/2 Rules Text: {W}, {T}: Tap target creature. Set/Rarity: Tempest common, Battle Royale Box Set common, Eighth Edition common, Ninth Edition common, Duel Decks: Speed vs. Cunning common, Tempest Remastered common, The List common Price: $0.06

Name: Master Healer Cost: 4W Type: Creature -- Human Cleric Pow/Tgh: 1/4 Rules Text: {T}: Prevent the next 4 damage that would be dealt to any target this turn. Set/Rarity: Urza's Destiny rare, Seventh Edition rare, Eighth Edition rare, Ninth Edition rare Price: $0.21

Name: Master Piandao Cost: 4W Type: Legendary Creature -- Human Warrior Ally Pow/Tgh: 4/4 Rules Text: First strike Whenever Master Piandao attacks, look at the top four cards of your library. You may reveal an Ally, Equipment, or Lesson card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. Set/Rarity: Avatar: The Last Airbender uncommon Price: $0.16

Name: Master Skald Cost: 4W Type: Creature -- Dwarf Warrior Pow/Tgh: 4/4 Rules Text: When this creature enters, you may exile a creature card from your graveyard. If you do, return target artifact or enchantment card from your graveyard to your hand. Set/Rarity: Kaldheim common Price: $0.02