Massacre Wurm
Casting Cost:
When Massacre Wurm enters the battlefield, creatures your opponents control get -2/-2 until end of turn.
Whenever a creature an opponent controls dies, that player loses 2 life.
$ 000
Massacre
If an opponent controls a Plains and you control a Swamp, you may cast Massacre without paying its mana cost.
All creatures get -2/-2 until end of turn
Masako the Humorless
You may play Masako the Humorless any time you could play an instant.
Tapped creatures you control may block as though they were untapped.
Martyr's Bond
Whenever Martyr's Bond or another nonland permanent you control is put into a graveyard from the battlefield, each opponent sacrifices a permanent that shares a card type with it.
Martyr of Sands
, Reveal X white cards from your hand, Sacrifice Martyr of Sands: You gain three times X life.
Martial Coup
Put X 1/1 white Soldier creature tokens into play. If X is 5 or more, destroy all other creatures.
Marshaling the Troops
Tap any number of untapped creatures you control. You gain 4 life for each creature tapped this way.
Marsh Flats
, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card and put it onto the battlefield. Then shuffle your library.
Marrow-Gnawer
Rat creatures have fear. (They can't be blocked except by artifact creatures and/or black creatures.)
, Sacrifice a Rat: Put X 1/1 black Rat creature tokens onto the battlefield, where X is the number of Rats you control.
Mark of Asylum
Prevent all noncombat damage that would be dealt to creatures you control.
Marit Lage Token
Flying, indestructible
Marchesa, the Black Rose
Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)
Other creatures you control have dethrone.
Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step.
Marble Diamond
Maralen of the Mornsong
Players can't draw cards.
At the beginning of each player's draw step, that player loses 3 life, searches his or her library for a card, puts it into his or her hand, then shuffles his or her library.
Manriki-Gusari
Equipped creature gets +1/+2 and has ": Destroy target Equipment."
Equip (: Attach to target creature you control. Equip only as a sorcery.)