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

: Masticore deals 1 damage to target creature.

: Regenerate Masticore.

Target creature gets +1/+1 and gains flying until end of turn.

Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

At the beginning of combat on your turn, put your choice of a +1/+1, first strike, vigilance, or menace counter on Me, the Immortal.

Counters remain on Me as it moves to any zone other than a player's hand or library.

You may cast Me from your graveyard by discarding two cards in addition to paying its other costs.

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it.

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

Paradox — Whenever you cast a spell from anywhere other than your hand, Memory Worm deals 2 damage to target player. That player discards a card, then draws a card. Put a +1/+1 counter on Memory Worm.

, Discard a card: Draw a card.

Target player discards a card.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

, Discard a card: Draw a card.

, Discard a card: Put a -1/-1 counter on target creature. That creature can't block this turn.

: Draw a card, then discard a card.

When Merfolk Traders enters the battlefield, draw a card, then discard a card.

Flying

Council's dilemma — When Messenger Jays enters the battlefield, starting with you, each player votes for feather or quill. Put a +1/+1 counter on Messenger Jays for each feather vote and draw a card for each quill vote. For each card drawn this way, discard a card.

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.

Midnight Oil enters the battlefield with seven hour counters on it.

At the beginning of your draw step, draw an additional card and remove two hour counters from Midnight Oil.

Your maximum hand size is equal to the number of hour counters on Midnight Oil.

Whenever you discard a card, you lose 1 life.

Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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

Counter target spell. That spell's controller reveals their hand, then discards each card with the same name as a card spliced onto that spell.

Target player discards X cards, where X is one plus the number of cards named Mind Burst in all graveyards.

As an additional cost to cast this spell, sacrifice a creature.

Target player reveals their hand and discards all cards of each of the sacrificed creature's colors.

When Mind Maggots enters the battlefield, discard any number of creature cards. For each card discarded this way, put two +1/+1 counters on Mind Maggots.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Target player discards a card.

Devoid (This card has no color.)

When Mind Raker enters the battlefield, you may put a card an opponent owns from exile into that player's graveyard. If you do, each opponent discards a card.

Target player discards two cards.

, Sacrifice a creature: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.

Target opponent reveals each noncreature, nonland card in their hand. You choose a card revealed this way. That player discards that card. You lose 2 life. If they didn't reveal a card this way, you draw a card.

Look at target player's hand and choose X cards from it. That player discards those cards.

All Slivers have ", Sacrifice this permanent: Each player discards a card."

When Mindslicer dies, each player discards their hand.

Whenever Mindstab Thrull attacks and isn't blocked, you may sacrifice it. If you do, defending player discards three cards.

All Slivers have ", Sacrifice this permanent: Target player discards a card at random. Activate only as a sorcery."

Target opponent discards two cards.

Awaken 3— (If you cast this spell for , also put three +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

As Mirrodin Besieged enters the battlefield, choose Mirran or Phyrexian.

• Mirran — Whenever you cast an artifact spell, create a 1/1 colorless Myr artifact creature token.

• Phyrexian — At the beginning of your end step, draw a card, then discard a card. Then if there are fifteen or more artifact cards in your graveyard, target opponent loses the game.

Counter target spell unless its controller pays .

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

Whenever Mishra, Lost to Phyrexia enters the battlefield or attacks, choose three —

• Target opponent discards two cards.

• Mishra deals 3 damage to any target.

• Destroy target artifact or planeswalker.

• Creatures you control gain menace and trample until end of turn.

• Creatures you don't control get -1/-1 until end of turn.

• Create two tapped Powerstone tokens.

Banding (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 you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

At the beginning of your upkeep, Mishra's War Machine deals 3 damage to you unless you discard a card. If Mishra's War Machine deals damage to you this way, tap it.

Defender

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

, Discard a land card: Molten Vortex deals 2 damage to any target.

As Monastery Siege enters the battlefield, choose Khans or Dragons.

• Khans — At the beginning of your draw step, draw an additional card, then discard a card.

• Dragons — Spells your opponents cast that target you or a permanent you control cost more to cast.

Target creature gets +4/+4 until end of turn.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Monstrous Carabid attacks each combat if able.

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

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Moon-Circuit Hacker deals combat damage to a player, you may draw a card. If you do, discard a card unless Moon-Circuit Hacker entered the battlefield this turn.

Flying

Whenever you cast a spell, you may discard your hand. If you do, draw a card for each of that spell's colors.

When Moonveil Regent dies, it deals X damage to any target, where X is the number of colors among permanents you control.

, Discard a card: Exile target card from a graveyard.

, Sacrifice Mortiphobia: Exile target card from a graveyard.

At the beginning of combat on your turn, you may discard a card. When you do, Mount Velus Manticore deals X damage to any target, where X is the number of card types the discarded card has.

If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard.

: Add one mana of any color.

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.)

Equipped creature gets +2/+2.

Equip—Discard a card.

Myojin of Night's Reach enters the battlefield with a divinity counter on it if you cast it from your hand.

Myojin of Night's Reach has indestructible as long as it has a divinity counter on it.

Remove a divinity counter from Myojin of Night's Reach: Each opponent discards their hand.

At the beginning of your upkeep, scry 1.

Whenever you discard a card, each opponent mills two cards. (They put the top two cards of their library into their graveyard.)

+2: You may discard a card. If you do, draw a card.

−2: Exile target enchantment, tapped artifact, or tapped creature.

−8: Search your library for an artifact or creature card, put it onto the battlefield, then shuffle. It gains haste. Return it to your hand at the beginning of the next end step.