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 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.

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

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

Flying, vigilance

If Morning Apparition would be put into a graveyard from anywhere, exile it instead.

Changeling (This card is every creature type.)

As Morophon, the Boundless enters, choose a creature type.

Spells of the chosen type you cast cost less to cast. This effect reduces only the amount of colored mana you pay.

Other creatures you control of the chosen type get +1/+1.

Morselhoarder enters with two -1/-1 counters on it.

Remove a -1/-1 counter from Morselhoarder: Add one mana of any color.

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.

: All creatures able to block Mortipede this turn do so.

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.

: Regenerate Mortivore. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

First strike

Reinforce 1— (, Discard this card: Put a +1/+1 counter on target creature.)

Trample

When Mossbeard Ancient enters, you gain 5 life.

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.

Whenever Mossdog becomes the target of a spell or ability an opponent controls, put a +1/+1 counter on Mossdog.

: Target creature with power 5 or greater gains trample until end of turn.

Whenever you attack, target attacking creature gets +1/+0 and gains first strike until end of turn.

, Exile Mother Bear from your graveyard: Create two 2/2 green Bear creature tokens. Activate only as a sorcery.

Whenever a creature an opponent controls dies, sacrifice Mother of Goons unless you insult that creature.

Partner with itself (When this enters, target player may put Mothers Yamazaki into their hand from their library, then shuffle. A Commander deck can include two of this card, and they can be your commanders.)

As long as you control exactly two permanents named Mothers Yamazaki, the "legend rule" doesn't apply to them, and Samurai you control get +2/+2 and have vigilance and haste.

Flying

, : Tap target creature.

Trample, haste

Whenever Motivated Pony attacks, attacking creatures get +1/+1 until end of turn. If a Food entered under your control this turn, untap those creatures and they get an additional +2/+2 until end of turn.

Haste

: Until end of turn, whenever you cast a black spell, put a +1/+1 counter on Mountain Titan.

Reach (This creature can block creatures with flying.)

: Mounted Archers can block an additional creature this turn.

, : Target player gains 1 life.

( can be paid with either or .)

Flying

Whenever Mourning Thrull deals damage, you gain that much life.

Haste

Delirium — When Mournwillow enters, if there are four or more card types among cards in your graveyard, creatures with power 2 or less can't block this turn.

Vigilance, trample

If one or more +1/+1 counters would be put on Mowu, Loyal Companion, that many plus one +1/+1 counters are put on it instead.

Whenever you roll a 4 or higher, create a 3/3 colorless Robot artifact creature token. If you rolled 6 or higher, instead create that token and a Treasure token.

, : Roll a six-sided die plus an additional six-sided die for each mana from Treasures spent to activate this ability.

Vigilance

Whenever you cast a spell, target opponent draws a card. Put a +1/+1 counter on target creature. It gains flying until end of turn. If this is the second time this ability has resolved this turn, you draw two cards.

Flanking <I>(Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)</I>

Flash

When Muck Drubb enters, change the target of target spell that targets only a single creature to Muck Drubb.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Haste

Mudbrawler Cohort gets +1/+1 as long as you control another red creature.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Mudbutton Clanger, you may reveal it. If you do, Mudbutton Clanger gets +1/+1 until end of turn.

At the beginning of your first main phase, add or for each Raccoon you control.

Whenever you expend 4, you gain 3 life. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

Whenever you expend 8, exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Play with the top card of your library revealed.

As long as the top card of your library is a creature card, Mul Daya Channelers gets +3/+3.

As long as the top card of your library is a land card, Mul Daya Channelers has ": Add two mana of any one color."

Flying

When Mulldrifter enters, draw two cards.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Reach, trample

Multani, Yavimaya's Avatar gets +1/+1 for each land you control and each land card in your graveyard.

, Return two lands you control to their owner's hand: Return Multani from your graveyard to your hand.

When Multiform Wonder enters, you get (three energy counters).

Pay : Multiform Wonder gains your choice of flying, vigilance, or lifelink until end of turn.

Pay : Multiform Wonder gets +2/-2 or -2/+2 until end of turn.

Whenever another Zombie you control enters, Mummy Paramount gets +1/+1 until end of turn.

Cohort — , Tap an untapped Ally you control: Put a +1/+1 counter on each creature you control.

You can't untap more than one land during your untap step.

Devoid (This card has no color.)

Deworded (This creature counts as having no abilities.)

When you cast this spell, put a primeval counter on target creature. (A creature with a primeval counter loses all abilities and can't gain abilities.)

Landfall — Whenever a land you control enters, you may pay . If you do, put two +1/+1 counters on Murasa Ranger.

Kicker (You may pay an additional as you cast this spell.)

When Murasa Sproutling enters, if it was kicked, return target card with a kicker ability from your graveyard to your hand.

When Murderous Redcap enters, it deals damage equal to its power to any target.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Whenever Murk Dwellers attacks and isn't blocked, it gets +2/+0 until end of combat.

Other green creatures you control get +1/+1.

Other blue creatures you control get +1/+1.

Untap all green and/or blue creatures you control during each other player's untap step.