Boneyard Mycodrax's power and toughness are each equal to the number of other creature cards in your graveyard.

Scavenge (, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Flying

Whenever a Dragon you control dies while Boneyard Scourge is in your graveyard, you may pay . If you do, return Boneyard Scourge from your graveyard to the battlefield.

Bonfire of the Damned deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.

Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Menace, indestructible

Bontu the Glorified can't attack or block unless a creature died under your control this turn.

, Sacrifice another creature: Scry 1. Each opponent loses 1 life and you gain 1 life.

Black creature spells you cast cost less to cast.

Whenever you cast a creature spell, each opponent loses 1 life and you gain 1 life.

As Booby Trap enters, choose an opponent and a card name other than a basic land card name.

The chosen player reveals each card they draw.

When the chosen player draws a card with the chosen name, sacrifice Booby Trap. If you do, Booby Trap deals 10 damage to that player.

Trample

Whenever Book Devourer deals combat damage to a player, you may discard all the cards in your hand. If you do, draw that many cards.

, Pay 2 life: Draw a card.

Destroy target land you control and target land you don't control.

Whenever Boomer Scrapper enters or attacks, you lose 1 life and create a Junk token. (It's an artifact with ", Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

Whenever a token you control leaves the battlefield, put a +1/+1 counter on Boomer Scrapper.

Whenever you crank Boomflinger, roll two six-sided dice. Boomflinger deals damage to target player or planeswalker equal to the difference between those results.

As Boomstacker enters and whenever it attacks, stack two dice on top of it. (All dice must be stacked vertically, one on top of another.)

Boomstacker gets +1/+1 for each die in its stack.

Boomstacker attacks each combat if able.

When the stack falls, sacrifice Boomstacker.

Enchant creature

Enchanted creature gets +3/-3.

Put a shield counter on target creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

Scry 1.

Draw four cards.

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

Flash

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Enchanted creature gets +4/+2.

When Boonweaver Giant enters, you may search your graveyard, hand, and/or library for an Aura card and put it onto the battlefield attached to Boonweaver Giant. If you search your library this way, shuffle.

Boot Nipper enters with your choice of a deathtouch counter or a lifelink counter on it.

Equipped creature gets +1/+0 and has haste.

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

Whenever Borborygmos and Fblthp enters or attacks, draw a card, then you may discard any number of land cards. When you discard one or more cards this way, Borborygmos and Fblthp deals twice that much damage to target creature.

: Put Borborygmos and Fblthp into its owner's library third from the top.

Vigilance

When Borderland Explorer enters, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle.

: Boreal Centaur gets +1/+1 until end of turn. Activate only once each turn. ( can be paid with one mana from a snow source.)

Flying

Spells your opponents cast that target Boreal Elemental cost more to cast.

Whenever you cast a creature spell, if of any of that spell's colors was spent to cast it, that creature enters with an additional +1/+1 counter on it. ( is mana from a snow source.)

Flying

When Boreas Charger leaves the battlefield, choose an opponent who controls more lands than you. Search your library for a number of Plains cards equal to the difference, reveal those cards, put one of them onto the battlefield tapped and the rest into your hand, then shuffle.

Enchant artifact or creature

As long as enchanted permanent is a creature, it gets +1/+1 for each creature and/or Vehicle you control.

Channel — , Discard Born to Drive: Create two 1/1 colorless Pilot creature tokens with "This creature crews Vehicles as though its power were 2 greater."

Whenever Boromir, Gondor's Hope enters or attacks, look at the top six cards of your library. You may reveal a Human or artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

At the beginning of each combat, up to one target creature attacks or blocks this combat if able and up to one target creature can't attack or block this combat.

Choose one —

• Boros Charm deals 4 damage to target player or planeswalker.

• Permanents you control gain indestructible until end of turn.

• Target creature gains double strike until end of turn.

Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

Boros Garrison enters tapped.

When Boros Garrison enters, return a land you control to its owner's hand.

: Add .

: Target creature gains haste until end of turn.

: Target creature gains first strike until end of turn.

: Add or .

, , Sacrifice Boros Locket: Draw two cards.

Whenever Boros Reckoner is dealt damage, it deals that much damage to any target.

: Boros Reckoner gains first strike until end of turn.

, : Add .

Double strike

Escalate (Pay this cost for each mode chosen beyond the first.)

Choose one or both —

• Target creature gets +3/+0 until end of turn.

• Target creature gains first strike until end of turn.

When Borrowed Time enters, exile target nonland permanent an opponent controls until Borrowed Time leaves the battlefield.

Borrowing the East Wind deals X damage to each creature with horsemanship and each player.

When Boseiju Pathlighter enters the battlefield, draft a card from Boseiju Pathlighter's spellbook.

: Add .

Channel — , Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs less to activate for each legendary creature you control.

Trample

, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact's mana value to any target.

Treefolk spells and Shaman spells you cast cost less to cast.

Boss's Chauffeur enters with a number of +1/+1 counters on it equal to one plus the number of other creatures you control.

Alliance — Whenever another creature you control enters, put a +1/+1 counter on Boss's Chauffeur.

When Boss's Chauffeur dies, create a 1/1 green and white Citizen creature token for each +1/+1 counter on it.

Botanical Plaza enters tapped.

: Add or .

, , Sacrifice Botanical Plaza: Draw a card.

Create three 1/1 colorless Thopter artifact creature tokens with flying. Surveil 2.

Sacrifice Bottle Gnomes: You gain 3 life.