Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce.

: Add .

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.

Lifelink

Whenever another artifact you control enters, Mandible Justiciar gets +1/+1 until end of turn.

When Mangara's Tome enters, search your library for five cards, exile them in a face-down pile, and shuffle that pile. Then shuffle your library.

: The next time you would draw a card this turn, instead put the top card of the exiled pile into its owner's hand.

Defender

Manor Gargoyle has indestructible as long as it has defender.

: Until end of turn, Manor Gargoyle loses defender and gains flying.

: 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.)

Equipped creature gets +2/+0.

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

: You gain 1 life.

Flying

: Marble Gargoyle gets +0/+1 until end of turn.

Whenever Marching Duodrone attacks, each player creates a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

When Marina Vendrell's Grimoire enters, if you cast it, draw five cards.

You have no maximum hand size and don't lose the game for having 0 or less life.

Whenever you gain life, draw that many cards.

Whenever you lose life, discard that many cards. Then if you have no cards in hand, you lose the game.

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.")

Equipped creature gets +1/+2 and has hexproof. (It can't be the target of spells or abilities your opponents control.)

Equip

When Mask of Immolation enters, create a 1/1 red Elemental creature token, then attach Mask of Immolation to it.

Equipped creature has "Sacrifice this creature: It deals 1 damage to any target."

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

Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card.

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

, , Sacrifice Mask of the Jadecrafter: Create an X/X colorless Golem artifact creature token. Activate only as a sorcery.

Unearth (: Return this card from your graveyard to the battlefield. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

, : Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)

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

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.)

You may have Masterwork of Ingenuity enter as a copy of any Equipment on the battlefield.

: Regenerate Matopi Golem. When it regenerates this way, put a -1/-1 counter on it.

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

Equipped creature gets +2/+2 and has flying and first strike.(It deals combat damage before creatures without first strike.)

Equip

, Put a page counter on this artifact: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

, , Put a page counter on this artifact: Draw a card.

When there are four or more page counters on this artifact, exile it. If you do, you gain 4 life.

, , Discard a card: Regenerate target creature.

Living metal (During your turn, this Vehicle is also a creature.)

Whenever Megatron attacks, you may sacrifice another artifact. When you do, Megatron deals damage equal to the sacrificed artifact's mana value to target creature. If excess damage would be dealt to that creature this way, instead that damage is dealt to that creature's controller and you convert Megatron.

Vigilance

Meldweb Strider enters with an oil counter on it.

Remove an oil counter from Meldweb Strider: It becomes an artifact creature until end of turn.

Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

, Sacrifice Memory Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.

When Memory Test enters, target opponent exiles cards from the bottom of their library until they exile five nonland cards, then turns those nonland cards face down.

Visit — Name the exiled nonland cards, then look at the exiled cards. If you named them correctly, claim the prize

Prize — Create three 1/1 red Balloon creature tokens with flying, then sacrifice Memory Test and open an Attraction.

Lights — 5, 6

When Mephitic Draught enters or is put into a graveyard from the battlefield, you draw a card and you lose 1 life.

, : Put a winch counter on Mercadian Lift.

, Remove X winch counters from Mercadian Lift: You may put a creature card with mana value X from your hand onto the battlefield.

Visit — Creatures you control with power 2 or less gain horsemanship until end of turn. (They can't be blocked except by creatures with horsemanship.)

Lights — 2, 6

Whenever a permanent becomes untapped, that permanent's controller mills a card.

When Metalspinner's Puzzleknot enters, you draw a card and you lose 1 life.

, Sacrifice Metalspinner's Puzzleknot: You draw a card and you lose 1 life.

: Reveal any number of artifact cards in your hand. Add for each card revealed this way.

Equipped creature gets +4/+0 and has trample.

Equip

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

When a spell or ability an opponent controls causes you to discard Metrognome, create four 1/1 colorless Gnome artifact creature tokens.

, : Create a 1/1 colorless Gnome artifact creature token.

: Add .

: Put an hour counter on Midnight Clock.

At the beginning of each upkeep, put an hour counter on Midnight Clock.

When the twelfth hour counter is put on Midnight Clock, shuffle your hand and graveyard into your library, then draw seven cards. Exile Midnight Clock.

Attacking creatures get +1/+0.

Flying

, : Target player mills two cards.

Imprint — Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with Mimic Vat to its owner's graveyard.

, : Create a token that's a copy of a card exiled with Mimic Vat. It gains haste. Exile it at the beginning of the next end step.

: Add .

, , Sacrifice Mind Stone: Draw a card.

Mindless Automaton enters with two +1/+1 counters on it.

, Discard a card: Put a +1/+1 counter on Mindless Automaton.

Remove two +1/+1 counters from Mindless Automaton: Draw a card.

Players can't search libraries.

, , 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.)

At the beginning of your upkeep, draw a card if you had no cards in hand at the beginning of this turn. If you had a card in hand, Mindstorm Crown deals 1 damage to you.

Whenever a nontoken creature you control enters, you may pay . If you do, create a token that's a copy of that creature, except it has haste and "At the beginning of the end step, sacrifice this permanent."