Equipped creature gets +1/+1 for each charge counter on Mace of the Valiant and has vigilance.

Whenever a creature enters the battlefield under your control, put a charge counter on Mace of the Valiant.

Equip

: Roll a six-sided die. On a 3 or lower,

target player adds . Otherwise, that player adds one mana of any color they choose.

Whenever equipped creature attacks, it deals damage equal to its power to the player or planeswalker it's attacking.

Equip

Mage-Ring Responder doesn't untap during your untap step.

: Untap Mage-Ring Responder.

Whenever Mage-Ring Responder attacks, it deals 7 damage to target creature defending player controls.

Flying

When Magister Sphinx enters the battlefield, target player's life total becomes 10.

: Put a pressure counter on Magma Mine.

, Sacrifice Magma Mine: It deals damage equal to the number of pressure counters on it to any target.

Whenever another artifact is put into a graveyard from the battlefield, Magnetic Mine deals 2 damage to that artifact's controller.

If a creature with a magnet counter on it attacks, all creatures with magnet counters on them attack if able.

Whenever a creature with a magnet counter on it attacks, all creatures with magnet counters on them block that creature this turn if able.

, : Put a magnet counter on target creature.

: Malachite Golem gains trample until end of turn.

Flash

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

Equipped creature gets +2/+2.

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

Malefic Scythe enters the battlefield with a soul counter on it.

Equipped creature gets +1/+1 for each soul counter on Malefic Scythe.

Whenever equipped creature dies, put a soul counter on Malefic Scythe.

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

, : Add one mana of any color.

Instant and enchantment spells you cast cost less to cast.

: Flip a coin. If you win the flip, add . Activate only as an instant.

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 the battlefield 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 enters the battlefield under your control, Mandible Justiciar gets +1/+1 until end of turn.

, : Untap another target artifact.

, : Target creature can't be blocked this turn.

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

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

Equipped creature gets +1/+2.

Whenever you draw your second card each turn, attach Mantle of Tides to target creature you control.

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

Haste

When Marauding Dreadship enters the battlefield, incubate 2. (Create an Incubator token with two +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Marble Diamond enters the battlefield tapped.

: Add .

All Walls able to block Marble Priest do so.

Prevent all combat damage that would be dealt to Marble Priest by Walls.

: Add , , or .

, , Sacrifice Mardu Banner: Draw a card.

Trample

When Marut enters the battlefield, 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 has flying and lifelink.

Whenever equipped creature dies, you may pay X life, where X is its power. If you do, draw X cards.

Equip

At the beginning of each player's upkeep, if there are four or more basic land types among lands that player controls, Mask of Intolerance deals 3 damage to that player.

Equipped creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

Whenever equipped creature deals combat damage to a player, you may draw a card.

Equip

Whenever equipped creature deals combat damage to a player, it connives X, where X is the amount of damage it dealt to that player. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)

Equip

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.

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

: Create a 4/4 white and blue Golem artifact creature token. Activate only if Master's Manufactory or another artifact entered the battlefield under your control this turn.

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

: Masticore deals 1 damage to target creature.

: Regenerate Masticore.

: 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.)

, 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.

, Exile Mechtitan Core and four other artifact creatures and/or Vehicles you control: Create Mechtitan, a legendary 10/10 Construct artifact creature token with flying, vigilance, trample, lifelink, and haste that's all colors. When that token leaves the battlefield, return all cards exiled with Mechtitan Core except Mechtitan Core to the battlefield tapped under their owners' control.

Crew 2

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

More Than Meets the Eye (You may cast this card converted for .)

Your opponents can't cast spells during combat.

At the beginning of your postcombat main phase, you may convert Megatron. If you do, add for each 1 life your opponents have lost this turn.

: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)

: Gain control of target artifact. (This effect lasts indefinitely.)

Buyback costs cost less.

When Memory Test enters the battlefield, 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 face-down cards, then look at them. If you named them correctly, turn them face up, then claim the prize

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

Lights — 4, 6

, Exile Memory Vessel: Each player exiles the top seven cards of their library. Until your next turn, players may play cards they exiled this way, and they can't play cards from their hand. Activate only as a sorcery.

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

, , Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

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 — 5, 6

As Metallic Mimic enters the battlefield, choose a creature type.

Metallic Mimic is the chosen type in addition to its other types.

Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.

, : Regenerate target artifact.

This spell costs less to cast, where X is the total mana value of noncreature artifacts you control.

Sacrifice two artifacts: Return Metalwork Colossus from your graveyard to your hand.

When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls.