Name: Mammoth Umbra Cost: 4W Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature gets +3/+3 and has vigilance. Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.) Set/Rarity: Rise of the Eldrazi uncommon, Planechase 2012 uncommon, Planechase Anthology uncommon, Ultimate Masters common Price: $0.22

Name: Mana Confluence Type: Land Rules Text: {T}, Pay 1 life: Add one mana of any color. Set/Rarity: Magic Online Promos mythic, Journey into Nyx rare, Zendikar Expeditions mythic, Secret Lair Drop rare, Commander Legends mythic, Explorer Anthology 2 rare, Edge of Eternities: Stellar Sights mythic Price: $33.03

Name: Mana Cylix Cost: 1 Type: Artifact Rules Text: {1}, {T}: Add one mana of any color. Set/Rarity: Planeshift uncommon, Conflux common Price: $0.10

Name: Mana Geode Cost: 3 Type: Artifact Rules Text: When this artifact enters, scry 1. {T}: Add one mana of any color. Set/Rarity: War of the Spark common, Jumpstart common Price: $0.29

Name: Mana Leech Cost: 2B Type: Creature -- Leech Pow/Tgh: 1/1 Rules Text: You may choose not to untap this creature during your untap step. {T}: Tap target land. It doesn't untap during its controller's untap step for as long as this creature remains tapped. Set/Rarity: Urza's Saga uncommon Price: $0.20

Name: Mana Matrix Cost: 6 Type: Artifact Rules Text: Instant and enchantment spells you cast cost {2} less to cast. Set/Rarity: Legends rare, Masters Edition IV rare Price: $71.57

Name: Mana Prism Cost: 3 Type: Artifact Rules Text: {T}: Add {C}. {1}, {T}: Add one mana of any color. Set/Rarity: Mirage uncommon, Classic Sixth Edition uncommon, Vintage Masters common Price: $0.17

Name: Mana Skimmer Cost: 3B Type: Creature -- Leech Pow/Tgh: 2/2 Rules Text: Flying Whenever this creature deals damage to a player, tap target land that player controls. That land doesn't untap during its controller's next untap step. Set/Rarity: Time Spiral common Price: $0.11

Name: Mana Tithe Cost: W Type: Instant Rules Text: Counter target spell unless its controller pays {1}. Set/Rarity: Magic Online Promos common, Planar Chaos common, Magic Player Rewards 2008 rare, The List common, Time Spiral Remastered common, Strixhaven Mystical Archive rare Price: $0.80

Name: Mana Vault Cost: 1 Type: Artifact Rules Text: This artifact doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap this artifact. At the beginning of your draw step, if this artifact is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}. Set/Rarity: Limited Edition Alpha rare, Limited Edition Beta rare, Unlimited Edition rare, Collectors' Edition rare, Intl. Collectors' Edition rare, Revised Edition rare, Foreign Black Border rare, Summer Magic / Edgar rare, Fourth Edition rare, Fourth Edition Foreign Black Border rare, Fifth Edition rare, Magic Online Promos rare, Magic Online Promos mythic, Masters Edition IV rare, Vintage Masters rare, Kaladesh Inventions special, Ultimate Box Topper mythic, Ultimate Masters mythic, Secret Lair Drop mythic, Double Masters 2022 mythic, 30th Anniversary Edition rare Price: $97.50

Name: Mana Web Cost: 3 Type: Artifact Rules Text: Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce. Set/Rarity: Weatherlight rare Price: $17.33

Name: Manaforce Mace Cost: 4 Type: Artifact -- Equipment Rules Text: Domain -- Equipped creature gets +1/+1 for each basic land type among lands you control. Equip {3} Set/Rarity: Conflux uncommon Price: $0.09

Name: Manakin Cost: 2 Type: Artifact Creature -- Construct Pow/Tgh: 1/1 Rules Text: {T}: Add {C}. Set/Rarity: Tempest common, Iconic Masters common, Jumpstart 2022 common Price: $0.34

Name: Manalith Cost: 3 Type: Artifact Rules Text: {T}: Add one mana of any color. Set/Rarity: Magic 2012 common, Hour of Devastation common, Core Set 2019 common, Game Night common Price: $0.12

Name: Manascape Refractor Cost: 3 Type: Artifact Rules Text: This artifact enters tapped. This artifact has all activated abilities of all lands on the battlefield. You may spend mana as though it were mana of any color to pay the activation costs of this artifact's abilities. Set/Rarity: Commander 2020 rare Price: $1.23

Name: Mandate of Abaddon Cost: 3B Type: Sorcery Rules Text: Choose target creature you control. Destroy all creatures with power less than that creature's power. Set/Rarity: Warhammer 40,000 Commander rare Price: $5.18

Name: Mandate of Peace Cost: 1W Type: Instant Rules Text: Cast this spell only during combat. Your opponents can't cast spells this turn. End the combat phase. (Remove all attackers and blockers from combat. Exile all spells and abilities from the stack, including this spell.) Set/Rarity: Commander 2019 rare Price: $1.55

Name: Mandible Justiciar Cost: 1W Type: Artifact Creature -- Phyrexian Cleric Pow/Tgh: 2/1 Rules Text: Lifelink Whenever another artifact you control enters, this creature gets +1/+1 until end of turn. Set/Rarity: Phyrexia: All Will Be One common Price: $0.20

Name: Mandibular Kite Cost: W Type: Artifact -- Equipment Rules Text: Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1 and has flying. Equip {3}{W} Set/Rarity: Modern Horizons 3 common Price: $0.23

Name: Mandroid Squadron Cost: 1W Type: Artifact Creature -- Human Soldier Pow/Tgh: 0/4 Rules Text: When this creature enters, you gain 2 life. Set/Rarity: Marvel Super Heroes Commander common Price: $1.02