Whenever a permanent becomes untapped, that permanent's controller mills a card.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

, Discard a card: Draw a card.

Enchant creature

When Mesmerizing Dose enters the battlefield, tap enchanted creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Enchanted creature doesn't untap during its controller's untap step.

When Meteorite enters the battlefield, it deals 2 damage to any target.

: Add one mana of any color.

(Transforms from Path of Mettle.)

: Add one mana of any color.

, : Metzali, Tower of Triumph deals 2 damage to each opponent.

, : Choose a creature at random that attacked this turn. Destroy that creature.

At the beginning of combat on your turn, if you control each creature on the battlefield with the greatest power, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Whenever a nontoken creature you control attacks, you may pay . If you do, create a 1/1 white Kithkin Soldier creature token that's tapped and attacking.

Minas Tirith Garrison's power is equal to the number of cards in your hand.

Whenever Minas Tirith Garrison attacks, you may tap any number of untapped Humans you control. Draw a card for each Human tapped this way.

Each opponent reveals cards from the top of their library until they reveal X land cards, then puts all cards revealed this way into their graveyard. X can't be 0.

Flying

: Target player mills a card. Mindshrieker gets +X/+X until end of turn, where X is the milled card's mana value.

Mines of Moria enters the battlefield tapped unless you control a legendary creature.

: Add .

, , Exile three cards from your graveyard: Create two Treasure tokens.

Creatures you control get +1/+1.

Whenever you tap a land for mana, add one mana of any type that land produced.

As long as it's your turn, Mounts and Vehicles you control have hexproof.

Whenever a Mount or Vehicle you control attacks, put a +1/+1 counter on it.

Flying, vigilance

Whenever you surveil, put a +1/+1 counter on Mirko, Obsessive Theorist.

At the beginning of your end step, you may return target creature card with power less than Mirko's from your graveyard to the battlefield with a finality counter on it. (If it would die, exile it instead.)

First strike, forestwalk, vigilance (This creature deals combat damage before creatures without first strike, it can't be blocked as long as defending player controls a Forest, and attacking doesn't cause this creature to tap.)

At the beginning of your upkeep, you may look at the top three cards of your library, then put them back in any order.

All combat damage that would be dealt to you this turn by target unblocked creature is dealt to its controller instead.

Whenever Mistford River Turtle attacks, another target attacking non-Human creature can't be blocked this turn.

Flying

You may cast Misthollow Griffin from exile.

Flying

When Mistmoon Griffin dies, exile Mistmoon Griffin, then return the top creature card of your graveyard to the battlefield.

Mistvault Bridge enters the battlefield tapped.

Indestructible

: Add or .

Flying

Whenever you cast a spell from anywhere other than your hand, you may pay . If you do, copy that spell and you may choose new targets for the copy. If the copy is a permanent spell, it gains haste and "At the beginning of your end step, sacrifice this permanent." (A copy of a permanent spell becomes a token.)

Whenever Mobile Garrison attacks, untap another target artifact or creature you control.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Flying

Instant and sorcery spells you cast cost less to cast.

Trample, lifelink

(: Add or .)

Molten Tributary enters the battlefield tapped.

Target creature gets +4/+4 until end of turn.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Divine Intervention — When Moon-Blessed Cleric enters the battlefield, you may search your library for an enchantment card, reveal it, then shuffle and put that card on top.

(: Add .)

Moonring Island enters the battlefield tapped.

, : Look at the top card of target player's library. Activate only if you control two or more blue permanents.

Menace (This creature can't be blocked except by two or more creatures.)

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Moonrise Intruder.

Delirium — Moorland Drifter has flying as long as there are four or more card types among cards in your graveyard.

As an additional cost to cast this spell, sacrifice an artifact or creature.

Draw cards equal to the mana value of the sacrificed permanent.

Deathtouch, haste

, Discard a card: Draw a card. If the discarded card was a creature card, amass Orcs 1. (Put a +1/+1 counter on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

Whenever an artifact is put into a graveyard from the battlefield, you may put a +1/+1 counter on Moriok Rigger.

Changeling (This card is every creature type.)

You may have Moritte of the Frost enter the battlefield as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.

Flying

Primarch of the Death Guard — At the beginning of your end step, you may pay . If you do, create X 2/2 black Astartes Warrior creature tokens with menace. X can't be greater than the amount of life you lost this turn.

If Mossbridge Troll would be destroyed, regenerate it.

Tap any number of untapped creatures you control other than Mossbridge Troll with total power 10 or greater: Mossbridge Troll gets +20/+20 until end of turn.

Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Mosswort Bridge enters the battlefield tapped.

: Add .

, : You may play the exiled card without paying its mana cost if creatures you control have total power 10 or greater.

Flying

, : Tap target creature.

Return up to one target creature card from your graveyard to your hand. Create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

Whenever Mukotai Soulripper attacks, you may sacrifice another artifact or creature. If you do, put a +1/+1 counter on Mukotai Soulripper and it gains menace until end of turn.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Equipped creature has lifelink if you control a Cleric, deathtouch if you control a Rogue, haste if you control a Warrior, and flying if you control a Wizard.

As long as you have a full party, prevent all damage that would be dealt to equipped creature.

Equip

Devoid (This card has no color.)

When Murk Strider enters the battlefield, you may put a card an opponent owns from exile into that player's graveyard. If you do, return target creature to its owner's hand.

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

When Mycosynth Wellspring enters the battlefield or is put into a graveyard from the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Myojin of Roaring Blades enters the battlefield with an indestructible counter on it if you cast it from your hand.

Remove an indestructible counter from Myojin of Roaring Blades: It deals 7 damage to each of up to three targets.

Indestructible (Effects that say "destroy" don't destroy this artifact.)

Myr creatures get +1/+1.

: Create a 1/1 colorless Myr artifact creature token.

Spend only mana produced by creatures to cast this spell.