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

Midnight Entity — Whenever Midnight Crusader Shuttle attacks, defending player faces a villainous choice — That player sacrifices a creature, or you gain control of a creature of your choice that player controls until end of turn. If you gain control of a creature this way, tap it, and it's attacking that player.

Crew 2

Trample

Ward—Discard a card.

Whenever Mighty Servant of Leuk-o becomes crewed for the first time each turn, if it was crewed by exactly two creatures, it gains "Whenever this creature deals combat damage to a player, draw two cards" until end of turn.

Crew 4

Flying

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Mindleech Ghoul exploits a creature, each opponent exiles a card from their hand.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Flying

Whenever this creature mutates, exile the top card of each opponent's library face down. You may look at and play those cards for as long as they remain exiled.

Mindless Null can't block unless you control a Vampire.

Whenever a nontoken creature enters the battlefield under your control, 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."

When Minsc & Boo, Timeless Heroes enters the battlefield and at the beginning of your upkeep, you may create Boo, a legendary 1/1 red Hamster creature token with trample and haste.

+1: Put three +1/+1 counters on up to one target creature with trample or haste.

−2: Sacrifice a creature. When you do, Minsc & Boo, Timeless Heroes deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards.

Minsc & Boo, Timeless Heroes can be your commander.

: Destroy target Aura attached to a creature you control.

Target creature gets +2/+2 until end of turn.

Metalcraft — That creature gets +4/+4 until end of turn instead if you control three or more artifacts.

The "legend rule" doesn't apply.

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Whenever this creature attacks, for each attacking modified creature you control, create a tapped and attacking token that's a copy of that creature. Exile those tokens at end of combat. (Equipment, Auras you control, and counters are modifications.)

, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

Flash

When Misleading Signpost enters the battlefield during the declare attackers step, you may reselect which player or permanent target attacking creature is attacking. (It can't attack its controller or their permanents.)

: Add .

Sacrifice Mistcaller: Until end of turn, if a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.

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

When Mizzium Meddler enters the battlefield, you may change a target of target spell or ability to Mizzium Meddler.

Using a mobile device, take a picture of target creature. That device enters the battlefield as a token that's a photocopy of the pictured creature. (Photocopies include Auras, Equipment, counters, and stickers in the shot. Don't touch other people's phones without permission and be careful if you do.)

Whenever Mobile Garrison attacks, untap another target artifact or creature you control.

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.)

Mogg Jailer can't attack if defending player controls an untapped creature with power 2 or less.

You may choose not to untap Mole Worms during your untap step.

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

Whenever Momentum Rumbler attacks, if it doesn't have first strike, put a first strike counter on it.

Whenever Momentum Rumbler attacks, if it has first strike, it gains double strike until end of turn.

Divine Intervention — When Moon-Blessed Cleric enters the battlefield, you may search your library for an enchantment card, reveal it, then shuffle and put that card on top.

Double team (When this creature attacks, conjure a duplicate into your hand, then both of them perpetually lose double team.)

Whenever Moradin's Disciples attacks, tap target creature defending player controls.

Add or subtract 1 or one from a number or number word on target spell or permanent until end of turn.

You have no maximum hand size.

At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever you draw your second card each turn, put two +1/+1 counters on Morska, Undersea Sleuth.

, : Add .

Mountain Valley enters the battlefield tapped.

, Sacrifice Mountain Valley: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Haste

Mudbrawler Cohort gets +1/+1 as long as you control another red creature.

Counter target instant or sorcery spell.

Transmute (, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Play with the top card of your library revealed.

As long as the top card of your library is a creature card, Mul Daya Channelers gets +3/+3.

As long as the top card of your library is a land card, Mul Daya Channelers has ": Add two mana of any one color."

Haste

Rally — Whenever Munda, Ambush Leader or another Ally enters the battlefield under your control, you may look at the top four cards of your library. If you do, reveal any number of Ally cards from among them, then put those cards on top of your library in any order and the rest on the bottom in any order.

Target creature gets +X/+X until end of turn, where X is 3 plus the number of cards named Muscle Burst in all graveyards.

Enchant creature

Prevent all damage that would be dealt by enchanted creature.

Myojin of Cleansing Fire enters the battlefield with a divinity counter on it if you cast it from your hand.

Myojin of Cleansing Fire has indestructible as long as it has a divinity counter on it.

Remove a divinity counter from Myojin of Cleansing Fire: Destroy all other creatures.

Choose target nonlegendary creature. The next time one or more creatures or planeswalkers enter the battlefield this turn, they enter as copies of the chosen creature.

Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

When Naga Oracle enters the battlefield, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Changeling (This card is every creature type.)

Target creature gets +3/-3 and loses all creature types until end of turn.

Trample

As Nameless Race enters the battlefield, pay any amount of life. The amount you pay can't be more than the total number of white nontoken permanents your opponents control plus the total number of white cards in their graveyards.

Nameless Race's power and toughness are each equal to the life paid as it entered the battlefield.

Lifelink

Whenever you sacrifice an enchantment, draw a card.

Whenever the final chapter ability of a Saga you control resolves, each opponent loses X life and you gain X life, where X is that Saga's mana value.

: Add for each counter on Nardole. Spend this mana only to cast noncreature spells.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

Menace, ward

Whenever Nashi, Moon's Legacy attacks, exile up to one target legendary or Rat card from your graveyard and copy it. You may cast the copy. (You still pay its costs. A copy of a permanent spell becomes a token.)

Put target artifact on the bottom of its owner's library.

, Discard a card: Put a +1/+1 counter on target creature or that creature gains banding, first strike, or trample. (This effect lasts indefinitely. Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Equipped creature has menace, deathtouch, annihilator 1, and "Whenever an opponent sacrifices a nontoken permanent, put that card onto the battlefield under your control unless that player pays 3 life." (Whenever a creature with annihilator 1 attacks, defending player sacrifices a permanent.)

Equip

, : Add one mana of any color.

, : Prevent the next 1 damage that would be dealt to any target this turn.

Destroy all creatures, then return a creature card put into a graveyard this way to the battlefield under your control. It's a black Zombie in addition to its other colors and types. Exile Necromantic Selection.

Flying

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Whenever Needle Specter deals combat damage to a player, that player discards that many cards.

Needle Storm deals 4 damage to each creature with flying.

Flash

Protection from artifacts