Bretagard Stronghold enters tapped.

: Add .

, , Sacrifice Bretagard Stronghold: Put a +1/+1 counter on each of up to two target creatures you control. They gain vigilance and lifelink until end of turn. Activate only as a sorcery.

When Breya's Apprentice enters, create a 1/1 colorless Thopter artifact creature token with flying.

, Sacrifice an artifact: Choose one —

• Exile the top card of your library. Until the end of your next turn, you may play that card.

• Target creature gets +2/+0 until end of turn.

Trample

Domain — Whenever Briar Hydra deals combat damage to a player, put X +1/+1 counters on target creature you control, where X is the number of basic land types among lands you control.

Enchant creature

Enchanted creature gets +1/+1.

Sacrifice Briar Shield: Enchanted creature gets +3/+3 until end of turn.

Whenever Briarblade Adept attacks, target creature an opponent controls gets -1/-1 until end of turn.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Vigilance

When Briarbridge Tracker enters, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

As long as you control a token, Briarbridge Tracker gets +2/+0.

Whenever you cast a Spirit or Arcane spell, put a +1/+1 counter on target creature.

Trample

When Bribe Taker enters, for each kind of counter on permanents you control, you may put your choice of a +1/+1 counter or a counter of that kind on Bribe Taker.

Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.

Whenever a nontoken creature is put into your graveyard from the battlefield, if Bridge from Below is in your graveyard, create a 2/2 black Zombie creature token.

When a creature is put into an opponent's graveyard from the battlefield, if Bridge from Below is in your graveyard, exile Bridge from Below.

Vigilance

Whenever Bridled Bighorn attacks while saddled, create a 1/1 white Sheep creature token.

Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

Each Fungus and Saproling you control has ": Add ."

At the beginning of your end step, create a 1/1 green Saproling creature token.

Radiance — Brightflame deals X damage to target creature and each other creature that shares a color with it. You gain life equal to the damage dealt this way.

: Brightling gains vigilance until end of turn.

: Brightling gains lifelink until end of turn.

: Return Brightling to its owner's hand.

: Brightling gets +1/-1 or -1/+1 until end of turn.

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Whenever this creature attacks, double the number of +1/+1 counters on target creature. That creature can't be blocked by creatures with power 2 or less this turn.

, : Look at the top four cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Vigilance

Nimble (This creature can't be blocked by creatures with power 3 or greater.)

Kithkin you control have thoughtweft. (A creature with thoughtweft has all printed keyword abilities of other creatures you control with thoughtweft.)

Draw three cards.

Converge — Draw X cards, where X is the number of colors of mana spent to cast this spell. Then discard two cards.

Whenever you cast a Phyrexian creature or artifact creature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

At the beginning of each end step, if a Phyrexian died under your control this turn, proliferate.

Flying, haste

Whenever you cast your second spell each turn, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

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

If it's neither day nor night, it becomes day as Brimstone Vandal enters.

Whenever day becomes night or night becomes day, Brimstone Vandal deals 1 damage to each opponent.

Sacrifice Brindle Boar: You gain 4 life.

Whenever Brine Comber enters or becomes the target of an Aura spell, create a 1/1 white Spirit creature token with flying.

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

This spell costs less to cast for each enchantment you control.

, : Reveal any number of blue cards in your hand. Counter target spell unless its controller pays for each card revealed this way.

Flash

When Brinebarrow Intruder enters, target creature an opponent controls gets -2/-0 until end of turn.

Enchant creature

Whenever Brinebound Gift enters or enchanted creature becomes the target of an Aura spell, create a 1/1 white Spirit creature token with flying.

If Brinebound Gift would be put into a graveyard from anywhere, exile it instead.

Create two 1/1 white Human creature tokens. (Then exile this card. You may cast the creature later from exile.)

Bring Low deals 3 damage to target creature. If that creature has a +1/+1 counter on it, Bring Low deals 5 damage to it instead.

Target noncreature artifact you control becomes a 0/0 artifact creature. Put four +1/+1 counters on it.

Exile target creature with power 4 or greater.

You may pay rather than pay this spell's mana cost.

Trample

At the beginning of your upkeep, you may draw two cards.

Flying

When Bringer of the Last Gift enters, if you cast it, each player sacrifices all other creatures they control. Then each player returns all creature cards from their graveyard that weren't put there this way to the battlefield.

You may pay rather than pay this spell's mana cost.

Trample

At the beginning of your upkeep, you may return target artifact card from your graveyard to the battlefield.

At the beginning of your upkeep, if you have no cards in hand, sacrifice Brink of Madness and target opponent discards their hand.

Flying, first strike, vigilance, lifelink

Your opponents can't cast spells with mana value 3 or less.

Defender

As long as you control a creature with power 4 or greater, Bristlepack Sentry can attack as though it didn't have defender.

Bristling Boar can't be blocked by more than one creature.

Landfall — Whenever a land you control enters, put a +1/+1 counter on target creature.

: Double the number of +1/+1 counters on each creature you control.

, , Exile Brittle Effigy: Exile target creature.

Counter target spell unless its controller pays . Clash with an opponent. If you win, that spell's controller mills four cards. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

Counter target spell.

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.)

Return Broken Fall to its owner's hand: Regenerate target creature.

Destroy target artifact, enchantment, or creature with flying.

Choose one —

• Target creature you control gets +1/+0 until end of turn. It deals damage equal to its power to target creature or planeswalker an opponent controls.

• Destroy target enchantment.

• Draw two cards.

When Brokers Hideout enters, sacrifice it. When you do, search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

Exile target nonartifact creature you control. It perpetually gains "This creature enters the battlefield with an additional shield counter on it." Then return that card to the battlefield under its owner's control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Trample

You may cast Brokkos, Apex of Forever from your graveyard using its mutate ability.