Choose target creature you control and target creature you don't control. If the creature you control entered this turn, put a +1/+1 counter on it. Then those creatures fight each other.

Flash

When Malamet Scythe enters, attach it to target creature you control.

Equipped creature gets +2/+2.

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

When Malamet War Scribe enters, creatures you control get +2/+1 until end of turn.

When Malcator, Purity Overseer enters, create a 3/3 colorless Phyrexian Golem artifact creature token.

At the beginning of your end step, if three or more artifacts entered the battlefield under your control this turn, create a 3/3 colorless Phyrexian Golem artifact creature token.

Flash

Flying

Whenever Malcolm, Alluring Scoundrel deals combat damage to a player, put a chorus counter on it. Draw a card, then discard a card. If there are four or more chorus counters on Malcolm, you may cast the discarded card without paying its mana cost.

Flying, haste

Whenever you cast your second spell each turn, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

, Sacrifice a creature: Return target creature card from your graveyard to your hand.

, Sacrifice Malevolent Hermit: Counter target noncreature spell unless its controller pays .

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Reveal the top four cards of your library. You may put a permanent card from among them into your hand. Put the rest into your graveyard. Create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this creature: Add ."

Flying

When Malevolent Witchkite enters, sacrifice any number of artifacts, enchantments, and/or tokens, then draw that many cards.

Destroy target nonblack creature. It can't be regenerated.

All creatures get -2/-2 until end of turn. If a creature an opponent controls would die this turn, exile it instead.

Flying

Malicious Invader gets +2/+0 as long as an opponent controls a Human.

Enchant creature

Enchanted creature loses flying.

Whenever enchanted creature blocks or becomes blocked by a creature, the other creature gains first strike until end of turn.

As long as you're shorter than an opponent, Man of Measure gets +0/+1 and has first strike.

As long as you're taller than an opponent, Man of Measure gets +1/+0.

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

, Pay 1 life: Add one mana of any color.

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Add for each tapped land your opponents control.

You may choose not to untap Mana Leech during your untap step.

: Tap target land. It doesn't untap during its controller's untap step for as long as Mana Leech remains tapped.

If you tap a permanent for mana, it produces twice as much of that mana instead.

Sacrifice any number of lands, then add that much .

Flying

Whenever Mana Skimmer deals damage to a player, tap target land that player controls. That land doesn't untap during its controller's next untap step.

When you cast this spell, counter it unless you sacrifice a land.

At the beginning of each player's upkeep, that player sacrifices a land.

When there are no lands on the battlefield, sacrifice Mana Vortex.

Flying, trample

Join forces — Whenever Mana-Charged Dragon attacks or blocks, each player starting with you may pay any amount of mana. Mana-Charged Dragon gets +X/+0 until end of turn, where X is the total amount of mana paid this way.

Domain — Equipped creature gets +1/+1 for each basic land type among lands you control.

Equip

Flying

Whenever you cast a noncreature spell, create an X/X red Dragon Illusion creature token with flying and haste, where X is the amount of mana spent to cast that spell. Exile that token at the beginning of the next end step.

Flying

Managorger Phoenix can't block.

Whenever you cast a spell, if Managorger Phoenix is in your graveyard, put a flame counter on Managorger Phoenix for each in that spell's mana cost. If Managorger Phoenix has five or more flame counters on it, return it to the battlefield and it perpetually gets +1/+1.

Manascape Refractor enters tapped.

Manascape Refractor has all activated abilities of all lands on the battlefield.

You may spend mana as though it were mana of any color to pay the activation costs of Manascape Refractor's abilities.

Choose target creature you control. Destroy all creatures with power less than that creature's power.

Whenever you crank Mandatory Friendship Shackles, target creature gets -1/-1 until end of turn.

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)

Equipped creature gets +1/+1 and has flying.

Equip

Lifelink

Whenever an opponent attacks with creatures, if two or more of those creatures are attacking you and/or planeswalkers you control, draw a card.

Whenever an opponent casts their second spell each turn, draw a card.

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 Manglehorn enters, you may destroy target artifact.

Artifacts your opponents control enter tapped.

When Manic Scribe enters, each opponent mills three cards.

Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, that player mills three cards.

When Manifestation Sage enters, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of cards in your hand.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

At the beginning of combat on your turn, target Mouse you control gains your choice of double strike or trample until end of turn.

: Switch each creature's power and toughness until end of turn.

Manor Gate enters tapped.

As Manor Gate enters, choose a color other than green.

: Add or one mana of the chosen color.

: Manta Riders gains flying until end of turn.

Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)

Manticore Eternal attacks each combat if able.

: Mantis Engine gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)

: Mantis Engine gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Flash (You may cast this spell any time you could cast an instant.)

Enchant creature

Whenever a creature enters, enchanted creature gets +2/+2 until end of turn.

Enchant creature

Enchanted creature gets +4/+4.

When Mantle of the Wolf is put into a graveyard from the battlefield, create two 2/2 green Wolf creature tokens.

Enchant creature

Enchanted creature gets +1/+3 and has reach. (It can block creatures with flying.)

Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Sacrifice a Food: Target creature blocks Maraleaf Rider this turn if able.

Marang River Prowler can't block and can't be blocked.

You may cast Marang River Prowler from your graveyard as long as you control a black or green permanent.

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.