Whenever a creature enters the battlefield, you may add an amount of equal to the number of creatures you control that share a creature type with it.

Instant and enchantment spells you cast cost less to cast.

If you tap a permanent for mana, it produces twice as much of that mana instead.

Tap all lands target player controls and that player loses all unspent mana.

Mana Vault doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap Mana Vault.

At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.

: Add .

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.

At the beginning of your end step, you may reveal your hand and put all land cards from it onto the battlefield. If you do, discard your hand.

Trample

Whenever a player casts a spell, put a +1/+1 counter on Managorger Hydra.

Whenever you cast a spell, Manaplasm gets +X/+X until end of turn, where X is that spell's mana value.

Choose target creature you control. Destroy all creatures with power less than that creature's power.

: Exile Mangara of Corondor and target permanent.

When Mangara's Tome enters the battlefield, 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.

Reveal the top ten cards of your library. Starting with the next opponent in turn order, each opponent chooses a different nonland card from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.

Defender

Manor Gargoyle has indestructible as long as it has defender.

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

Enchant creature you control

When Mantle of the Ancients enters the battlefield, return any number of target Aura and/or Equipment cards from your graveyard to the battlefield attached to enchanted creature.

Enchanted creature gets +1/+1 for each Aura and Equipment attached to it.

Players can't draw cards.

At the beginning of each player's draw step, that player loses 3 life, searches their library for a card, puts it into their hand, then shuffles.

Creature spells you cast cost less to cast.

Whenever another creature enters the battlefield under your control, Marauding Raptor deals 2 damage to it. If a Dinosaur is dealt damage this way, Marauding Raptor gets +2/+0 until end of turn.

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

Choose a nonbasic land type. Each land you control of that type becomes a copy of target creature you control until end of turn and gains haste until end of turn.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As an additional cost to cast this spell, you may exile any number of white cards from your hand. This spell costs less to cast for each card exiled this way.

Exile target artifact, creature, or enchantment with mana value X or less.

As an additional cost to cast this spell, you may exile any number of red cards from your hand. This spell costs less to cast for each card exiled this way.

Exile the top X cards of your library. You may play up to two of those cards until the end of your next turn.

As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs less to cast for each card exiled this way.

Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)

Each noncreature artifact is an artifact creature with power and toughness each equal to its mana value. (Equipment that's a creature can't equip a creature.)

Whenever you commit a crime, you may pay . If you do, look at the top two cards of your library. Put one of them into your hand and the other into your graveyard. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Other creatures you control have dethrone.

Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step.

Whenever a nontoken creature you control attacks, create a 1/1 red Goblin creature token that's tapped and attacking.

Sacrifice Mardu Ascendancy: Creatures you control get +0/+3 until end of turn.

Whenever Mardu Strike Leader attacks, create a 2/1 black Warrior creature token.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Fabricate 3 (When this creature enters the battlefield, put three +1/+1 counters on it or create three 1/1 colorless Servo artifact creature tokens.)

Whenever an artifact you control is put into a graveyard from the battlefield, target opponent loses life equal to Marionette Master's power.

Whenever Marit Lage's Slumber or another snow permanent enters the battlefield under your control, scry 1.

At the beginning of your upkeep, if you control ten or more snow permanents, sacrifice Marit Lage's Slumber. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

Prevent all noncombat damage that would be dealt to creatures you control.

Flying

, Discard a card: Put two +1/+1 counters on Markov Dreadknight.

Maro's power and toughness are each equal to the number of cards in your hand.

, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

Multikicker (You may pay an additional any number of times as you cast this spell.)

Creatures you control get +1/+1.

When Marshal's Anthem enters the battlefield, return up to X target creature cards from your graveyard to the battlefield, where X is the number of times Marshal's Anthem was kicked.

Woman Who Walked the Earth — When Martha Jones enters the battlefield, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever you sacrifice a Clue, Martha Jones and up to one other target creature can't be blocked this turn.

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

At the beginning of your upkeep, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Whenever Martyr's Bond or another nonland permanent you control is put into a graveyard from the battlefield, each opponent sacrifices a permanent that shares a card type with it.

Whenever another Elf enters the battlefield under your control, put a +1/+1 counter on Marwyn, the Nurturer.

: Add an amount of equal to Marwyn's power.

Haste

: Draw a card, then discard a card.

Whenever you discard an Island, Pirate, or Vehicle card, create a tapped Treasure token.

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

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

Green creatures and white creatures have protection from Gorgons.

Threshold — Masked Gorgon has protection from green and from white as long as seven or more cards are in your graveyard.

Destroy all nonwhite creatures.

All creatures have haste.

For each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain haste until end of turn.

Menace

When Massacre Girl enters the battlefield, each other creature gets -1/-1 until end of turn. Whenever a creature dies this turn, each creature other than Massacre Girl gets -1/-1 until end of turn.

Each other creature you control enters the battlefield with a number of additional +1/+1 counters on it equal to Master Biomancer's power and as a Mutant in addition to its other types.

At the beginning of your upkeep, each opponent chooses money, friends, or secrets. For each player who chose money, you and that player each create a Treasure token. For each player who chose friends, you and that player each create a 1/1 green and white Citizen creature token. For each player who chose secrets, you and that player each draw a card.

When Master of Death enters the battlefield, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

At the beginning of your upkeep, if Master of Death is in your graveyard, you may pay 1 life. If you do, return it to your hand.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Master of Pearls is turned face up, creatures you control get +2/+2 until end of turn.