: Add or .

: Boros Keyrune becomes a 1/1 red and white Soldier artifact creature with double strike until end of turn. (It deals both first-strike and regular combat damage.)

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.)

( can be paid with either or .)

First strike

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.

Draw a card for each tapped creature target opponent controls.

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.

, : Until end of turn, if the top card of your graveyard is an instant or sorcery card, you may cast that card. If a card cast this way would be put into a graveyard this turn, exile it instead.

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.

Surge (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)

Boulder Salvo deals 4 damage to target creature.

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.

Flash (You may cast this spell any time you could cast an instant.)

When Bounding Krasis enters the battlefield, you may tap or untap target creature.

Flying

Whenever you cast a Spirit or Arcane spell, you may gain life equal to that spell's converted mana cost.

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

: Add or .

Creatures with flying can't block creatures you control.

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.

Flying

Whenever Brago, King Eternal deals combat damage to a player, exile any number of target nonland permanents you control, then return those cards to the battlefield under their owner's control.

Cumulative upkeep—Add . (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of each player's upkeep, that player may put an artifact, creature, or land card from their hand onto the battlefield.

, , Sacrifice Braidwood Sextant: Search your library for a basic land card, reveal that card, and put it into your hand. Then shuffle your library.

When you cast this spell, any player may sacrifice a creature. If a player does, counter Brain Gorgers.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

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.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Sacrifice Brain Weevil: Target player discards two cards. Activate this ability only any time you could cast a sorcery.

Target player draws X cards.

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

Whenever Bramble Creeper attacks, it gets +5/+0 until end of turn.

Whenever another nontoken creature enters the battlefield, you may pay . If you do, that creature's controller creates a token that's a copy of that creature.

: Bramblefort Fink has base power and toughness 10/10 until end of turn. Activate this ability only if you control an Oko planeswalker.

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

Choose one or both —

• Branching Bolt deals 3 damage to target creature with flying.

• Branching Bolt deals 3 damage to target creature without flying.

Gain control of all permanents you own. (This effect lasts indefinitely.)

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

Branded Brawlers can't attack if defending player controls an untapped land.

Branded Brawlers can't block if you control an untapped land.

Flying

Brass Gnat doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap Brass Gnat.

Brass Man doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap Brass Man.

: Attach target Equipment you control to target creature you control.

For each land you control, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Enchant creature

Enchanted creature gets +1/+1 for each other creature you control.

Creatures you control have vigilance.

Each creature you control can block an additional creature each combat.

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

Whenever Brawl-Bash Ogre attacks, you may sacrifice another creature. If you do, Brawl-Bash Ogre gets +2/+2 until end of turn.

Trample

As long as Brawn is in your graveyard and you control a Forest, creatures you control have trample.

Haste

When Brazen Buccaneers enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Haste

Target creature gets +2/+0 and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

When Breaching Leviathan enters the battlefield, if you cast it from your hand, tap all nonblue creatures. Those creatures don't untap during their controllers' next untap steps.

Creatures you control get +1/+1 until end of turn.

Fateful hour — If you have 5 or less life, those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

: Target creature with power 2 or less gains haste until end of turn and can't be blocked this turn.

Target player puts the top eight cards of their library into their graveyard.

Fuse (You may cast one or both halves of this card from your hand.)

You may cast Breaking Wave as though it had flash if you pay more to cast it. (You may cast it any time you could cast an instant.)

Simultaneously untap all tapped creatures and tap all untapped creatures.

Draw four cards, then choose X cards in your hand and discard the rest.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Green creatures have "Cumulative upkeep ."