| Card name : | Knollspine Invocation | Mana Cost : |   | Types : | Enchantment | Card Text : | , Discard a card with converted mana cost X: Knollspine Invocation deals X damage to target creature or player. | | | Expansion : | Shadowmoor | Rarity : | Rare |
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| Card name : | Kulrath Knight | Mana Cost : |   | Types : | Creature - Elemental Knight | Card Text : | Flying Wither (This deals damage to creatures in the form of -1/-1 counters.) Creatures your opponents control with counters on them can't attack or block. | P/T : | 3 / 3 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Last Breath | Mana Cost : |  | Types : | Instant | Card Text : | Remove target creature with power 2 or less from the game. Its controller gains 4 life. | | | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Leech Bonder | Mana Cost : |  | Types : | Creature - Merfolk Soldier | Card Text : | Leech Bonder comes into play with two -1/-1 counters on it.
, : Move a counter from target creature onto another target creature. ( is the untap symbol.) | P/T : | 3 / 3 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Leechridden Swamp | | | Types : | Land - Swamp | Card Text : | ( Add to your mana pool.) Leechridden Swamp comes into play tapped.
, Each opponent loses 1 life. Play this ability only if you control two or more black permanents. | | | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Loamdragger Giant | Mana Cost : |    | Types : | Creature - Giant Warrior | Card Text : | | P/T : | 7 / 6 | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Loch Korrigan | Mana Cost : |  | Types : | Creature - Spirit | Card Text : | : Loch Korrigan gets +1/+1 until end of turn. | P/T : | 1 / 1 | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Lockjaw Snapper | Mana Cost : | | Types : | Artifact Creature - Scarecrow | Card Text : | Wither (This deals damage to creatures in the form of -1/-1 counters.) When Lockjaw Snapper is put into a graveyard from play, put a -1/-1 counter on each creature with a -1/-1 counter on it. | P/T : | 2 / 2 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Lurebound Scarecrow | Mana Cost : | | Types : | Artifact Creature - Scarecrow | Card Text : | As Lurebound Scarecrow comes into play, choose a color. When you control no permanents of the chosen color, sacrifice Lurebound Scarecrow. | P/T : | 4 / 4 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Madblind Mountain | | | Types : | Land - Mountain | Card Text : | ( Add to your mana pool.) Madblind Mountain comes into play tapped.
, Shuffle your library. Play this ability only if you control two or more red permanents. | | | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Mana Reflection | Mana Cost : |   | Types : | Enchantment | Card Text : | If you tap a permanent for mana, it produces twice as much of that mana instead. | | | Expansion : | Shadowmoor | Rarity : | Rare |
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| Card name : | Manaforge Cinder | Mana Cost : | | Types : | Creature - Elemental Shaman | Card Text : | : Add or to your mana pool. Play this ability no more than three times each turn. | P/T : | 1 / 1 | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Manamorphose | Mana Cost : |  | Types : | Instant | Card Text : | Add two mana in any combination of colors to your mana pool. Draw a card. | | | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Mass Calcify | Mana Cost : |   | Types : | Sorcery | Card Text : | Destroy all nonwhite creatures. | | | Expansion : | Shadowmoor | Rarity : | Rare |
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| Card name : | Medicine Runner | Mana Cost : |  | Types : | Creature - Elf Cleric | Card Text : | When Medicine Runner comes into play, you may remove a counter from target permanent. | P/T : | 2 / 1 | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Memory Plunder | Mana Cost : |    | Types : | Instant | Card Text : | You may play target instant or sorcery card in an opponent's graveyard without paying its mana cost. | | | Expansion : | Shadowmoor | Rarity : | Rare |
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| Card name : | Memory Sluice | Mana Cost : | | Types : | Sorcery | Card Text : | Target player puts the top four cards of his or her library into his or her graveyard. Conspire (As you play this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.) | | | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Mercy Killing | Mana Cost : |  | Types : | Instant | Card Text : | Target creature's controller sacrifices it, then puts X 1/1 green and white Elf Warrior creature tokens into play, where X is that creature's power. | | | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Merrow Grimeblotter | Mana Cost : |  | Types : | Creature - Merfolk Wizard | Card Text : |  , : Target creature gets -2/-0 until end of turn. ( is the untap symbol.) | P/T : | 2 / 2 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Merrow Wavebreakers | Mana Cost : |  | Types : | Creature - Merfolk Soldier | Card Text : |  , : Merrow Wavebreakers gains flying until end of turn. ( is the untap symbol.) | P/T : | 3 / 3 | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Midnight Banshee | Mana Cost : |    | Types : | Creature - Spirit | Card Text : | Wither (This deals damage to creatures in the form of -1/-1 counters.) At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature. | P/T : | 5 / 5 | Expansion : | Shadowmoor | Rarity : | Rare |
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| Card name : | Mine Excavation | Mana Cost : |  | Types : | Sorcery | Card Text : | Return target artifact or enchantment card in a graveyard to its owner's hand. Conspire (As you play this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.) | | | Expansion : | Shadowmoor | Rarity : | Common |
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| Card name : | Mirrorweave | Mana Cost : |   | Types : | Instant | Card Text : | Each other creature becomes a copy of target nonlegendary creature until end of turn. | | | Expansion : | Shadowmoor | Rarity : | Rare |
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| Card name : | Mistmeadow Skulk | Mana Cost : |  | Types : | Creature - Kithkin Rogue | Card Text : | Lifelink, protection from converted mana cost 3 or greater | P/T : | 1 / 1 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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| Card name : | Mistmeadow Witch | Mana Cost : |  | Types : | Creature - Kithkin Wizard | Card Text : |   : Remove target creature from the game. Return that card to play under its owner's control at end of turn. | P/T : | 1 / 1 | Expansion : | Shadowmoor | Rarity : | Uncommon |
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