When Manglehorn enters, you may destroy target artifact.

Artifacts your opponents control enter tapped.

Equipped creature gets +1/+2 and has ": Destroy target Equipment."

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

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.

All Rats have fear.

, Sacrifice a Rat: Create X 1/1 black Rat creature tokens, where X is the number of Rats you control.

Trample

When Marut enters, if mana from a Treasure was spent to cast it, create a Treasure token for each mana from a Treasure spent to cast it. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

At the beginning of your upkeep, sacrifice Masticore unless you discard a card.

: Masticore deals 1 damage to target creature.

: Regenerate Masticore.

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.)

Terror from the Deep — When Mawloc enters, it fights up to one target creature an opponent controls. If that creature would die this turn, exile it instead.

If target spell has only one target and that target is a creature, change that spell's target to another creature.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Sacrifice an artifact: Megatog gets +3/+3 and gains trample until end of turn.

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

Cast this spell only during your turn and only during combat before blockers are declared.

You choose which creatures block this combat and how those creatures block.

Whenever a creature attacks and isn't blocked this combat, untap it and remove it from combat.

All lands are no longer snow.

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

, : Regenerate target artifact.

Put target permanent an opponent controls on top of its owner's library. That opponent may put an artifact, creature, enchantment, or land card from their hand onto the battlefield.

When Meteorite enters, it deals 2 damage to any target.

: Add one mana of any color.

When Micromancer enters, you may search your library for an instant or sorcery card with mana value 1, reveal it, put it into your hand, then shuffle.

, Mill a card: Add . (To mill a card, put the top card of your library into your graveyard.)

Replicate (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)

Choose target permanent an opponent controls. Search that player's library for a card with the same name and put it onto the battlefield under your control. Then that player shuffles.

Choose a nonland card name and a number greater than 0. Target player reveals their library. If that library contains exactly the chosen number of cards with the chosen name, Mindblaze deals 8 damage to that player. Then that player shuffles.

You draw two cards and target opponent discards two cards.

Devoid (This card has no color.)

Mindmelter can't be blocked.

: Target opponent exiles a card from their hand. Activate only as a sorcery. ( represents colorless mana.)

Heroic — Whenever you cast a spell that targets Mindreaver, exile the top three cards of target player's library.

, Sacrifice Mindreaver: Counter target spell with the same name as a card exiled with Mindreaver.

, , Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for the player.)

First strike (This creature deals combat damage before creatures without first strike.)

Whenever an opponent casts a white or blue instant or sorcery spell, Mindsparker deals 2 damage to that player.

Counter target spell unless its controller pays .

Mindwarper enters with three +1/+1 counters on it.

, Remove a +1/+1 counter from Mindwarper: Target player discards a card. Activate only as a sorcery.

Whenever you cast an instant or sorcery spell, you may pay . If you do, copy that spell. You may choose new targets for the copy.

: Add .

: Add one mana of any color. Activate only if Mirrex entered this turn.

, : Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block." (Players dealt combat damage by it also get a poison counter.)

Mirrorpool enters tapped.

: Add .

, , Sacrifice Mirrorpool: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

, , Sacrifice Mirrorpool: Create a token that's a copy of target creature you control.

Whenever another nontoken artifact you control enters, you may pay . If you do, create a token that's a copy of that artifact.

Counter target instant or sorcery spell unless its controller pays .

Choose a nonland card name, then reveal the top card of your library. If that card has the chosen name, you draw three cards.

Put up to three target cards from an opponent's graveyard on top of their library in any order.

Whenever another nonartifact creature dies, return it to the battlefield under your control face down and tapped. It's a 2/2 Cyberman artifact creature.

At the beginning of your end step, each opponent faces a villainous choice — Each artifact creature you control deals 1 damage to that opponent, or you draw a card and chaos ensues.

: Counter target spell that targets Mistfolk.

Creatures without flying can't attack.

Soldier creatures have vigilance.

: Create a 1/1 white Soldier creature token.

Flying

You may have Mockingbird enter as a copy of any creature on the battlefield with mana value less than or equal to the amount of mana spent to cast Mockingbird, except it's a Bird in addition to its other types and it has flying.

, : Search your library for a Goblin permanent card, put it onto the battlefield, then shuffle.

Undergrowth — This spell costs less to cast for each creature card in your graveyard.

When Molderhulk enters, return target land card from your graveyard to the battlefield.

Whenever a nontoken creature you control dies,

Augment (, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Monoskelion enters with a +1/+1 counter on it.

, Remove a +1/+1 counter from Monoskelion: It deals 1 damage to any target.

Target creature gets +4/+4 until end of turn.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Target spell or permanent becomes colorless.

Attacking creatures get +1/+1 until end of turn.

Flying

Cumulative upkeep—Pay 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)