Morphic Pool enters tapped unless you have two or more opponents.

: Add or .

Enchant creature you control

Enchanted creature gets +1/+1.

Whenever enchanted creature deals combat damage to a player, you may sacrifice Mortal Obstinacy. If you do, destroy target enchantment.

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.

Destroy target creature or enchantment.

, Discard a card: Exile target card from a graveyard.

, Sacrifice Mortiphobia: Exile target card from a graveyard.

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.)

When Mortus Strider dies, return it to its owner's hand.

Moss Diamond enters tapped.

: Add .

Deathtouch

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.

, , Sacrifice Mossfire Egg: Add . Draw a card.

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

If Moss-Pit Skeleton was kicked, it enters with three +1/+1 counters on it.

Whenever one or more +1/+1 counters are put on a creature you control, if Moss-Pit Skeleton is in your graveyard, you may put Moss-Pit Skeleton on top of your library.

Hideaway 4 (When this land enters, 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 tapped.

: Add .

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

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.

Enchant creature

When Motion Sickness enters, tap enchanted creature.

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

Whenever you visit an Attraction, you may attach Motion Sickness to target tapped creature.

At the beginning of combat on your turn, you may discard a card. When you do, Mount Velus Manticore deals X damage to any target, where X is the number of card types the discarded card has.

Haste

Red legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Mountain Valley enters tapped.

, Sacrifice Mountain Valley: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Trample

Mounted Dreadknight enters with a +1/+1 counter on it if an opponent lost life this turn.

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."

Enchant creature

Enchanted creature gets -2/-0.

: Return Mourning to its owner's hand.

( can be paid with either or .)

Flying

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

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.

: Add one mana of any color. You get two poison counters.

Suspend 3— (Rather than cast this card from your hand, pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

: Add one mana of any color.

Flying

, : Return Mtenda Griffin to its owner's hand and return target Griffin card from your graveyard to your hand. Activate only during your upkeep.

+2: Target creature can't be blocked this turn.

−3: Draw two cards.

−10: Tap all creatures your opponents control. You take an extra turn after this one.

+2: Until your next turn, up to one target creature gets -2/-0 and loses flying.

−3: Create a 4/4 blue Elemental Bird creature token with flying.

−8: You get an emblem with "Islands you control have ‘: Draw a card.'"

Counter target instant or sorcery spell.

Transmute (, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Creatures without flying don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay for each creature chosen this way. If the player does, untap those creatures.

Mugging deals 2 damage to target creature. That creature can't block this turn.

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.)

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.

Destroy all enchantments. You gain 2 life for each enchantment destroyed this way.

Whenever a spell you've cast is countered, draw a card.

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.

If X is 1, scry 1, then draw a card.

If X is 2, you may choose a player. They return a creature they control to its owner's hand.

If X is 3, create a 4/4 blue and red Elemental creature token.

If X is 4 or more, do all of the above.

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.)

Enchant creature you control

When enchanted creature dies, create X 1/1 white Soldier creature tokens, where X is its power.

Lifelink

When Murderous Rider dies, put it on the bottom of its owner's library.

Devoid (This card has no color.)

When Murk Strider enters, 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.

Delve (Each card you exile from your graveyard while casting this spell pays for .)

Flying

Murktide Regent enters with a +1/+1 counter on it for each instant and sorcery card exiled with it.

Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on Murktide Regent.

(: Add .)

As Murmuring Bosk enters, you may reveal a Treefolk card from your hand. If you don't, Murmuring Bosk enters tapped.

: Add or . Murmuring Bosk deals 1 damage to you.

Defender

When Museum Nightwatch dies, create a 2/2 white and blue Detective creature token.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Flying, vigilance

Mutagen Connoisseur gets +1/+0 for each transformed permanent you control.

Trample

Warp Vortex — When Mutalith Vortex Beast enters, flip a coin for each opponent you have. For each flip you win, draw a card. For each flip you lose, Mutalith Vortex Beast deals 3 damage to that player.