Open a sealed Magic booster pack, reveal the cards, and put one of them into your hand. (Remove that card from your deck before beginning a new game.)

Lands you control have ": Create a Treasure token."

Whenever Borborygmos and Fblthp enters the battlefield 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.

Trample

Borderland Behemoth gets +4/+4 for each other Giant you control.

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

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

Vigilance

Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.

Sacrifice Boromir, Warden of the Tower: Creatures you control gain indestructible until end of turn. The Ring tempts you.

: Add or .

, , Sacrifice Boros Cluestone: Draw a card.

Boros Guildgate enters the battlefield tapped.

: Add or .

Battalion — Whenever Boros Mastiff and at least two other creatures attack, Boros Mastiff gains lifelink until end of turn. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

, : Add .

Double strike

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

Domain — When Bortuk Bonerattle enters the battlefield, if you cast it, choose target creature card in your graveyard. Return that card to the battlefield if its mana value is less than or equal to the number of basic land types among lands you control. Otherwise, put it into your hand.

Boseiju, Who Shelters All enters the battlefield tapped.

, Pay 2 life: Add . If that mana is spent on an instant or sorcery spell, that spell can't be countered.

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

Botanical Plaza enters the battlefield 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.

, Sacrifice Bottle of Suleiman: Flip a coin. If you win the flip, create a 5/5 colorless Djinn artifact creature token with flying. If you lose the flip, Bottle of Suleiman deals 5 damage to you.

At the beginning of each opponent's upkeep, exile all cards from your hand face down.

At the beginning of your upkeep, return all cards you own exiled with Bottled Cloister to your hand, then draw a card.

Bottomless Vault enters the battlefield tapped.

You may choose not to untap Bottomless Vault during your untap step.

At the beginning of your upkeep, if Bottomless Vault is tapped, put a storage counter on it.

, Remove any number of storage counters from Bottomless Vault: Add for each storage counter removed this way.

: Add .

Sacrifice a creature. Return up to X cards from your graveyard to your hand, where X is the number of colors that creature was. Exile this card.

You gain 1 life for each land you control.

Bountiful Promenade enters the battlefield tapped unless you have two or more opponents.

: Add or .

: Add one mana of any color.

, : Put a bounty counter on target creature. Activate only as a sorcery.

Whenever a creature with a bounty counter on it dies, each of its controller's opponents draws a card and gains 2 life.

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

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

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

If you have no land cards in your hand, seek a land card and a nonland card. Otherwise, seek two nonland cards. (To seek a card, put one at random from your library into your hand.)

At the beginning of your precombat main phase, remove all flood counters from Bounty of the Luxa. If no counters were removed this way, put a flood counter on Bounty of the Luxa and draw a card. Otherwise, add .

Prevent all damage that would be dealt to target multicolored creature this turn. For each 1 damage prevented this way, put a +1/+1 counter on that creature.

When Brackwater Elemental attacks or blocks, sacrifice it at the beginning of the next end step.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

While voting, you get an additional vote. (The votes can be for different choices or for the same choice.)

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)

I — You may sacrifice a creature. If you do, each opponent discards a card.

II — Return target creature card from your graveyard to your hand.

III — Target opponent may sacrifice a nonland, nontoken permanent. If they don't, they lose 2 life and you draw a card.

When Brain Maggot enters the battlefield, target opponent reveals their hand and you choose a nonland card from it. Exile that card until Brain Maggot leaves the battlefield.

Flying

At the beginning of your end step, exile the top card of each opponent's library. You may play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it.

Whenever a nonland permanent an opponent owns enters the battlefield under your control, they lose life equal to its mana value.

Draw three cards, then put two cards from your hand on top of your library in any order.

: Add .

, , Discard a card: Return Bramble Familiar to its owner's hand.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Toxic 2 (Players dealt combat damage by this creature also get two poison counters.)

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on that creature instead.

Indestructible

Whenever Brash Taunter is dealt damage, it deals that much damage to target opponent.

, : Brash Taunter fights another target creature.

, Sacrifice Brass Secretary: Draw a card.

When Brass's Tunnel-Grinder enters the battlefield, discard any number of cards, then draw that many cards plus one.

At the beginning of your end step, if you descended this turn, put a bore counter on Brass's Tunnel-Grinder. Then if there are three or more bore counters on it, remove those counters and transform it. (You descended if a permanent card was put into your graveyard from anywhere.)

Choose a color. White creatures you control gain protection from the chosen color until end of turn.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

If this spell was bargained, target land you control becomes a 3/3 Elemental creature with haste that's still a land.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Whenever Brazen Blademaster attacks while you control two or more artifacts, it gets +2/+1 until end of turn.

When Brazen Freebooter enters the battlefield, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Each player mills ten cards. For each player, choose a creature or planeswalker card in that player's graveyard. Put those cards onto the battlefield under your control. Then each creature you control becomes a Phyrexian in addition to its other types.