You may sacrifice two Mountains rather than pay this spell's mana cost.

Create two 1/1 red Goblin creature tokens.

: Target creature you control gets +1/+0 and gains flying until end of turn. Destroy that creature at the beginning of the next end step.

: Add .

: Add or . Mogg Hollows doesn't untap during your next untap step.

Whenever Mogg Maniac is dealt damage, it deals that much damage to target opponent or planeswalker.

If an opponent controls an Island and you control a Mountain, you may cast this spell without paying its mana cost.

Destroy target artifact.

When Mogis's Marauder enters, up to X target creatures each gain intimidate and haste until end of turn, where X is your devotion to black. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it. Each in the mana costs of permanents you control counts toward your devotion to black.)

Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on Mold Adder.

Enchant creature

Enchanted creature gets +3/+3.

Dredge 2 (If you would draw a card, you may mill two cards instead. If you do, return this card from your graveyard to your hand.)

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.

Create two 1/1 red Elemental creature tokens, then flip a coin. If you win the flip, return Molten Birth to its owner's hand.

Destroy target land. If that land was nonbasic, Molten Rain deals 2 damage to the land's controller.

Flying

At the beginning of your upkeep, sacrifice Molting Harpy unless you pay .

Enchant creature

At the beginning of your upkeep, you may put a growth counter on Momentum.

Enchanted creature gets +1/+1 for each growth counter on Momentum.

Freerunning (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.)

Exile the top two cards of your library. If this spell's freerunning cost was paid, exile the top X cards of your library instead. You may play the exiled cards until the end of your next turn.

When Monitor Monitor enters, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)

Once each turn, you may pay to reroll one or more dice you rolled.

Flurry of Blows — Whenever you cast your second spell each turn, put a +1/+1 counter on Monk of the Open Hand.

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

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

Monstrous Onslaught deals X damage divided as you choose among any number of target creatures, where X is the greatest power among creatures you control as you cast this spell.

Target creature gets +7/+7 until end of turn. Up to one other target creature blocks it this turn if able.

Cycling (, Discard this card: Draw a card.)

Kicker (You may pay an additional as you cast this spell.)

As Monstrous War-Leech enters, if it was kicked, mill four cards. (To mill a card, put the top card of your library into your graveyard.)

Monstrous War-Leech's power and toughness are each equal to the highest mana value among cards in your graveyard.

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

Target player can't play lands this turn if was spent to cast this spell and can't cast creature spells this turn if was spent to cast this spell. (Do both if was spent.)

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

(: Add .)

Moonring Island enters tapped.

, : Look at the top card of target player's library. Activate only if you control two or more blue permanents.

Flying

When Moonshae Pixie enters, draw cards equal to the number of opponents who were dealt combat damage this turn.

Flying, deathtouch

Whenever you gain or lose life during your turn, Bats you control get +1/+0 and gain deathtouch until end of turn. This ability triggers only once each turn.

Exile target creature card from a graveyard, then create X 1/1 green Saproling creature tokens, where X is the exiled card's toughness.

Whenever one or more other creatures die, draw a card. This ability triggers only once each turn.

Changeling (This card is every creature type.)

You may have Moritte of the Frost enter as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.

Menace (This creature can't be blocked except by two or more creatures.)

Whenever Morkrut Necropod attacks or blocks, sacrifice another creature or land.

This spell costs less to cast if you gained life this turn.

Destroy target nonland permanent.

Destroy target creature or enchantment.

Moss Diamond enters tapped.

: Add .

, , Sacrifice Mossfire Egg: Add . Draw a card.

: Target creature you control gains protection from the color of your choice until end of turn.

Red legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Protection from white

Haste

Delirium — When Mournwillow enters, if there are four or more card types among cards in your graveyard, creatures with power 2 or less can't block this turn.

: Add .

, , Sacrifice Mouth of Ronom: It deals 4 damage to target creature. ( can be paid with one mana from a snow source.)

Vigilance, trample

If one or more +1/+1 counters would be put on Mowu, Loyal Companion, that many plus one +1/+1 counters are put on it instead.

Flying

, : Return Mtenda Griffin to its owner's hand and return target Griffin card from your graveyard to your hand. Activate only during your upkeep.

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.)

Flying

When Mulldrifter enters, draw two cards.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Whenever a spell you've cast is countered, draw a card.

Flash

When Munitions Expert enters, you may have it deal damage to target creature or planeswalker equal to the number of Goblins you control.

Landfall — Whenever a land you control enters, you may pay . If you do, put two +1/+1 counters on Murasa Ranger.

Kicker (You may pay an additional as you cast this spell.)

When Murasa Sproutling enters, if it was kicked, return target card with a kicker ability from your graveyard to your hand.

Enchant creature you control

When enchanted creature dies, create X 1/1 white Soldier creature tokens, where X is its power.

Equipped creature gets +2/+2.

Equip—Discard a card.

When Murderous Redcap enters, it deals damage equal to its power to any target.

Persist (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.)