Whenever you cast a multicolored spell, Mana Cannons deals X damage to any target, where X is the number of colors that spell is.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

: Add .

Mana Vault doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap Mana Vault.

At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.

: Add .

As Mangara's Equity enters, choose black or red.

At the beginning of your upkeep, sacrifice Mangara's Equity unless you pay .

Whenever a creature of the chosen color deals damage to you or a white creature you control, Mangara's Equity deals that much damage to that creature.

When Manticore of the Gauntlet enters, put a -1/-1 counter on target creature you control. Manticore of the Gauntlet deals 3 damage to target opponent or planeswalker.

Marath, Will of the Wild enters with a number of +1/+1 counters on it equal to the amount of mana spent to cast it.

, Remove X +1/+1 counters from Marath: Choose one —

• Put X +1/+1 counters on target creature. X can't be 0.

• Marath deals X damage to any target. X can't be 0.

• Create an X/X green Elemental creature token. X can't be 0.

All Walls able to block Marble Priest do so.

Prevent all combat damage that would be dealt to Marble Priest by Walls.

Menace, deathtouch

Whenever Marchesa, Resolute Monarch attacks, remove all counters from up to one target permanent.

At the beginning of your upkeep, if you haven't been dealt combat damage since your last turn, you draw a card and you lose 1 life.

Vigilance, trample

Whenever a creature you control deals combat damage to a player, draw a card if that creature has a +1/+1 counter on it. If it doesn't, put a +1/+1 counter on it.

: Mardu Hateblade gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Whenever a creature an opponent controls dies, exile it with a hit counter on it.

Assassins, Mercenaries, and Rogues you control have deathtouch and "Whenever this creature deals combat damage to a player, you may remove a hit counter from a card that player owns in exile. If you do, draw a card and create two Treasure tokens."

Marjhan doesn't untap during your untap step.

, Sacrifice a creature: Untap Marjhan. Activate only during your upkeep.

Marjhan can't attack unless defending player controls an Island.

: Marjhan gets -1/-0 until end of turn and deals 1 damage to target attacking creature without flying.

When you control no Islands, sacrifice Marjhan.

Enchant creature

Enchanted creature has "Whenever this creature deals combat damage to a player, add that much . Until end of turn, you don't lose this mana as steps and phases end."

Whenever Markov Enforcer or another Vampire you control enters, Markov Enforcer fights up to one target creature an opponent controls.

Whenever a creature dealt damage by Markov Enforcer this turn dies, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Choose one or both —

• Creatures you control get +1/+0 until end of turn.

• Target Vampire you control deals damage equal to its power to another target creature.

Whenever Marsh Viper deals damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)

Until end of turn, target creature you control gains ": The next 1 damage that would be dealt to target creature, planeswalker, or player this turn is dealt to this creature instead." Only you may activate this ability.

As long as Martyrs of Korlis is untapped, all damage that would be dealt to you by artifacts is dealt to Martyrs of Korlis instead.

When Mask of Immolation enters, create a 1/1 red Elemental creature token, then attach Mask of Immolation to it.

Equipped creature has "Sacrifice this creature: It deals 1 damage to any target."

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever equipped creature deals combat damage to a player, it connives X, where X is the amount of damage it dealt to that player. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)

Equip

Massive Raid deals damage to any target equal to the number of creatures you control.

: Prevent the next 4 damage that would be dealt to any target this turn.

At the beginning of your upkeep, create a 2/2 green Wolf creature token.

: Tap all untapped Wolf creatures you control. Each Wolf tapped this way deals damage equal to its power to target creature. That creature deals damage equal to its power divided as its controller chooses among any number of those Wolves.

Target creature you control deals damage equal to its power to target creature or planeswalker you don't control.

Whenever Matsu-Tribe Birdstalker deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

: Matsu-Tribe Birdstalker gains reach until end of turn. (It can block creatures with flying.)

: Matsu-Tribe Sniper deals 1 damage to target creature with flying.

Whenever Matsu-Tribe Sniper deals damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Flying

: Mawcor deals 1 damage to any target.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Multicolored creatures you control have deathtouch.

: Add .

: Untap target attacking creature with shadow. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Flying

Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one.

Medomai the Ageless can't attack during extra turns.

Living metal (During your turn, this Vehicle is also a creature.)

Whenever Megatron attacks, you may sacrifice another artifact. When you do, Megatron deals damage equal to the sacrificed artifact's mana value to target creature. If excess damage would be dealt to that creature this way, instead that damage is dealt to that creature's controller and you convert Megatron.

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

Flying

Whenever Memory Vampire deals combat damage to a player, any number of target players each mill that many cards. Then you may collect evidence 9. When you do, you may cast target nonland card from defending player's graveyard without paying its mana cost.

Prevent the next 4 damage that would be dealt to any target this turn.

Target player discards a card.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Mephitic Ooze gets +1/+0 for each artifact you control.

Whenever Mephitic Ooze deals combat damage to a creature, destroy that creature. The creature can't be regenerated.

: The next time Mercenaries would deal damage to you this turn, prevent that damage. Any player may activate this ability.

, : Draw two cards.

, , Discard a card: Mercurial Chemister deals damage to target creature equal to the discarded card's mana value.

Mercurial Spelldancer can't be blocked.

Whenever you cast a noncreature spell, put an oil counter on Mercurial Spelldancer.

Whenever Mercurial Spelldancer deals combat damage to a player, you may remove two oil counters from it. If you do, when you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Flying

Whenever Merfolk Windrobber deals combat damage to a player, that player mills a card. (They put the top card of their library into their graveyard.)

Sacrifice Merfolk Windrobber: Draw a card. Activate only if an opponent has eight or more cards in their graveyard.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Meteor Shower deals X plus 1 damage divided as you choose among any number of targets.

Meteor Swarm deals 8 damage divided as you choose among X target creatures and/or planeswalkers.

Flying, vigilance

You have hexproof.

Whenever Metropolis Reformer is dealt damage, you gain that much life.

Whenever a source an opponent controls deals damage to you, that player sacrifices a permanent of your choice.

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.

Creatures you control can't be blocked except by legendary creatures.

Whenever one or more creatures you control deal combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)

Return target creature card from your graveyard to your hand.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Trample

Ward—Discard a card.

Whenever Mighty Servant of Leuk-o becomes crewed for the first time each turn, if it was crewed by exactly two creatures, it gains "Whenever this creature deals combat damage to a player, draw two cards" until end of turn.

Crew 4