For each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain haste until end of turn.

Exile all creatures you control, then reveal cards from the top of your library until you reveal that many creature cards. Put all creature cards revealed this way onto the battlefield, then shuffle the rest of the revealed cards into your library.

If an opponent controls a Plains and you control a Swamp, you may cast this spell without paying its mana cost.

All creatures get -2/-2 until end of turn.

Menace

Creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.)

Whenever a creature an opponent controls dies, if its toughness was less than 1, draw a card.

When Massacre Wurm enters, creatures your opponents control get -2/-2 until end of turn.

Whenever a creature an opponent controls dies, that player loses 2 life.

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

Each other creature you control enters with a number of additional +1/+1 counters on it equal to Master Biomancer's power and as a Mutant in addition to its other types.

, : Tap target creature.

First strike

: Tap target creature blocking Master of Arms.

First strike, deathtouch

Master of Cruelties can only attack alone.

Whenever Master of Cruelties attacks a player and isn't blocked, that player's life total becomes 1. Master of Cruelties assigns no combat damage this combat.

When Master of Death enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

At the beginning of your upkeep, if Master of Death is in your graveyard, you may pay 1 life. If you do, return it to your hand.

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.

When Master Thief enters, gain control of target artifact for as long as you control Master Thief.

Servos and Thopters you control get +1/+1.

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

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

Choose one —

• Create two 3/3 colorless Golem artifact creature tokens.

• Choose target artifact you control. Each other artifact you control becomes a copy of that artifact until end of turn.

Choose one —

• Search your library for a card, put it into your hand, then shuffle.

• Put a card you own from outside the game into your hand.

When Master's Guide-Mural enters, create a 4/4 white and blue Golem artifact creature token.

Craft with artifact (, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

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

Whenever a permanent you control is turned face up, you gain 1 life for each creature you control.

: Manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

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.

: Draw a card, then discard a card.

, : Transform Matzalantli, the Great Door. Activate only if there are four or more permanent types among cards in your graveyard. (Artifact, battle, creature, enchantment, land, and planeswalker are permanent types.)

When Maul of the Skyclaves enters, attach it to target creature you control.

Equipped creature gets +2/+2 and has flying and first strike.

Equip

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.

When Mausoleum Turnkey enters, return target creature card of an opponent's choice from your graveyard to your hand.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)

When Maverick Thopterist enters, create two 1/1 colorless Thopter artifact creature tokens with flying.

Whenever one or more nontoken Vampires you control attack, create a 1/1 white Vampire creature token with lifelink.

Destroy target land. You gain 4 life.

Flying

: Mawcor deals 1 damage to any target.

Target creature gets +1/+1 and gains flying until end of turn.

Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

, : 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.

Whenever a player sacrifices a permanent, Mayhem Devil deals 1 damage to any target.

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

At the beginning of each upkeep, if no spells were cast last turn, transform Mayor of Avabruck.

Trample

Multicolored creatures you control have trample.

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

Haste

Multicolored creatures you control have haste.

, Sacrifice Maze Skullbomb: Draw a card.

, Sacrifice Maze Skullbomb: Target creature you control gets +3/+3 and gains trample until end of turn. Draw a card. Activate only as a sorcery.

Maze's End enters tapped.

: Add .

, , Return Maze's End to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

Flying

Whenever a player sacrifices another permanent, put a +1/+1 counter on each creature you control.