Master of Etherium's power and toughness are each equal to the number of artifacts you control.

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

Flying

Whenever Master of Predicaments deals combat damage to a player, choose a card in your hand. That player guesses whether the card's mana value is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost.

: Create a 1/1 green Wolf creature token named Wolves of the Hunt. It has "bands with other creatures named Wolves of the Hunt." (Any creatures named Wolves of the Hunt can attack in a band as long as at least one has "bands with other creatures named Wolves of the Hunt." Bands are blocked as a group. If at least two creatures named Wolves of the Hunt you control, one of which has "bands with other creatures named Wolves of the Hunt," 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.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Master of the Veil is turned face up, you may turn target creature with a morph ability face down.

Protection from red

Elemental creatures you control get +1/+1.

When Master of Waves enters, create a number of 1/0 blue Elemental creature tokens equal to your devotion to blue. (Each in the mana costs of permanents you control counts toward your devotion to blue.)

When Master Skald enters, you may exile a creature card from your graveyard. If you do, return target artifact or enchantment card from your graveyard to your hand.

Reach

Whenever a creature you control with power equal to its toughness attacks, it gains trample until end of turn.

, , Return an artifact you control to its owner's hand: You may put an artifact card from your hand onto the battlefield.

Mastercraft Raptor's power is equal to the total power of the exiled cards used to craft it.

Whenever Mastermind Plum attacks, exile up to one target card from a graveyard. If an artifact card was exiled this way, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Whenever you cast a spell, if mana from a Treasure was spent to cast it, you draw a card and you lose 1 life.

Masumaro, First to Live's power and toughness are each equal to twice the number of cards in your hand.

Menace

At the beginning of your end step, put a bounty counter on target creature an opponent controls. For as long as that creature has a bounty counter on it, it has "When this creature dies, each opponent draws a card and gains 2 life."

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.

Menace

If one or more +1/+1 counters would be put on an Army, Goblin, or Orc you control, that many plus one +1/+1 counters are put on it instead.

When Maulfist Doorbuster enters, you get (two energy counters).

Whenever Maulfist Doorbuster attacks, you may pay . If you do, target creature can't block this turn.

Menace

Fabricate 1 (When this creature enters, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)

Flying

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

Whenever another creature you control dies, if you have the city's blessing, put a +1/+1 counter on Mausoleum Harpy.

Flying

Whenever another Spirit you control enters, Mausoleum Wanderer gets +1/+1 until end of turn.

Sacrifice Mausoleum Wanderer: Counter target instant or sorcery spell unless its controller pays , where X is Mausoleum Wanderer's power.

Flying

: You may cast target instant or sorcery card from your graveyard this turn. If that spell doesn't target a creature you control, it costs more to cast this way. If that spell would be put into your graveyard, exile it instead. Activate only once each turn. (You still pay the spell's costs. Timing rules for the spell still apply.)

Devoid (This card has no color.)

: Maw of Kozilek gets +2/-2 until end of turn. ( represents colorless mana.)

Flying

: Mawcor deals 1 damage to any target.

, : Look at the top five cards of your library. You may put a creature card with power 5 or greater from among them onto the battlefield. Put the rest on the bottom of your library in any order.

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

Whenever Mayhem Patrol attacks, target creature gets +1/+0 until end of turn.

Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

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

Multicolored creatures you control have deathtouch.

Flying

Multicolored creatures you control have flying.

Vigilance

Multicolored creatures you control have vigilance.

Whenever an enchanted creature attacks one of your opponents, it gets +2/+0 and gains trample until end of turn.

Whenever an Aura you control is put into your graveyard from the battlefield, exile it. Until the end of your next turn, you may cast that card.

When Meadowboon leaves the battlefield, put a +1/+1 counter on each creature target player controls.

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

As Meddling Kids enters, choose a word with four or more letters.

Spells with the chosen word in their text box can't be cast.

Haste

Whenever you attack with three or more creatures, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

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.

Trample

When Megatherium enters, sacrifice it unless you pay for each card in your hand.

More Than Meets the Eye (You may cast this card converted for .)

Your opponents can't cast spells during combat.

At the beginning of each of your postcombat main phases, you may convert Megatron. If you do, add for each 1 life your opponents have lost this turn.

When Meldweb Curator enters, put up to one target instant or sorcery card from your graveyard on top of your library.

Melek, Reforged Researcher's power and toughness are each equal to twice the number of instant and sorcery cards in your graveyard.

The first instant or sorcery spell you cast each turn costs less to cast.

Heroic — Whenever you cast a spell that targets Meletis Astronomer, look at the top three cards of your library. You may reveal an enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

You can't get poison counters.

Creatures you control can't have -1/-1 counters put on them.

Creatures your opponents control lose infect.

Melira's Keepers can't have counters put on it.

: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)

: Gain control of target artifact. (This effect lasts indefinitely.)

, Pay 1 life: Add . Spend this mana only to cast an instant or sorcery spell.

Paradox — Whenever you cast a spell from anywhere other than your hand, Memory Worm deals 2 damage to target player. That player discards a card, then draws a card. Put a +1/+1 counter on Memory Worm.

: Add one mana of any one color. Spend this mana only to cast a creature spell.

Whenever you cast a creature spell that doesn't share a creature type with a creature card in your library, draw a card.

Put target permanent card from your graveyard on top of your library. (Then exile this card. You may cast the creature later from exile.)

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

Flying

When Mentor of Evos Isle enters the battlefield, choose a creature card in your hand. It perpetually gains flying.

Flying

Each creature you control is a Vampire in addition to its other creature types and has "Whenever this creature deals damage to a creature, put a +1/+1 counter on this creature."

When this creature enters, you may draw a card.

Mercenary Informer can't be the target of black spells or abilities from black sources.

: Put target nontoken Mercenary on the bottom of its owner's library.

When Merchant of Secrets enters, draw a card.