At the beginning of each end step, each player gains control of all nontoken permanents they own.

Flying

When Broodmate Dragon enters, create a 4/4 red Dragon creature token with flying.

At the beginning of your end step, if you descended this turn, create a 1/1 black Fungus creature token with "This creature can't block." (You descended if a permanent card was put into your graveyard from anywhere.)

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Flying

Broodstar's power and toughness are each equal to the number of artifacts you control.

Freerunning (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.)

When Brotherhood Patriarch dies, each opponent loses 2 life and you gain 2 life.

At the beginning of combat on your turn, if you control a legendary Assassin, Brotherhood Spy gets +1/+0 until end of turn and can't be blocked this turn.

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

If there are exactly two permanents named Brothers Yamazaki on the battlefield, the "legend rule" doesn't apply to them.

Each other creature named Brothers Yamazaki gets +2/+2 and has haste.

Creature tokens you control have haste.

At the beginning of combat on your turn, create a 2/1 blue Phyrexian Myr artifact creature token. Then you may choose a token you control. If you do, each other token you control becomes a copy of that token.

Flying, vigilance

Whenever Bruna, Light of Alabaster attacks or blocks, you may attach to it any number of Auras on the battlefield and you may put onto the battlefield attached to it any number of Aura cards that could enchant it from your graveyard and/or hand.

Whenever Bruse Tarl, Boorish Herder enters or attacks, target creature you control gains double strike and lifelink until end of turn.

Partner (You can have two commanders if both have partner.)

Haste

Brushfire Elemental can't be blocked by creatures with power 2 or less.

Landfall — Whenever a land you control enters, Brushfire Elemental gets +2/+2 until end of turn.

: Target permanent's artist becomes the artist of your choice until end of turn.

When this creature enters or transforms into Brutal Cathar, exile target creature an opponent controls until this creature leaves the battlefield.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Whenever a creature you control attacks, defending player loses 1 life and you gain 1 life.

: Creatures your opponents control block this turn if able, and you choose how those creatures block.

When Brutalizer Exarch enters, choose one —

• Search your library for a creature card, reveal it, then shuffle and put that card on top.

• Put target noncreature permanent on the bottom of its owner's library.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

As Bubble Smuggler is turned face up, put four +1/+1 counters on it.

Bubbling Beebles can't be blocked as long as defending player controls an enchantment.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Budoka Pupil.

At the beginning of the end step, if there are two or more ki counters on Budoka Pupil, you may flip it.

Trample

Whenever Bull Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

When Bull Elephant enters, sacrifice it unless you return two Forests you control to their owner's hand.

Whenever Bull-Rush Bruiser attacks, if your team controls another Warrior, Bull-Rush Bruiser gains first strike until end of turn.

When this creature enters, you may destroy target artifact.

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

Whenever you sacrifice a token, Burdened Aerialist gains flying until end of turn.

When Burglar Rat enters, each opponent discards a card.

Whenever you draw a card, Burlfist Oak gets +2/+2 until end of turn.

Target creature you control deals damage equal to its power to any other target. Then sacrifice it.

Whenever you cast a noncreature spell, Burning Prophet gets +1/+0 until end of turn, then scry 1.

Whenever Burning Sun Cavalry attacks or blocks while you control a Dinosaur, Burning Sun Cavalry gets +1/+1 until end of turn.

When Burning-Eye Zubera dies, if 4 or more damage was dealt to it this turn, Burning-Eye Zubera deals 3 damage to any target.

Flying

When Burning-Rune Demon enters, you may search your library for exactly two cards not named Burning-Rune Demon that have different names. If you do, reveal those cards. An opponent chooses one of them. Put the chosen card into your hand and the other into your graveyard, then shuffle.

When Burning-Tree Emissary enters, add .

Riot (This creature enters with your choice of a +1/+1 counter or haste.)

Whenever Burning-Tree Vandal attacks, you may discard a card. If you do, draw a card.

Trample

Sacrifice Burr Grafter: Target creature gets +2/+2 until end of turn.

Soulshift 3 (When this creature dies, you may return target Spirit card with mana value 3 or less from your graveyard to your hand.)

Protection from red

Sacrifice Burrenton Forge-Tender: Prevent all damage a red source of your choice would deal this turn.

Flash

When Burrog Befuddler enters, target creature an opponent controls gets -1/-0 until end of turn.

When Burrowing Razormaw dies, mill four cards. (Put the top four cards of your library into your graveyard.)

When a creature dealt damage by Bushi Tenderfoot this turn dies, flip Bushi Tenderfoot.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

When this creature enters, you may forage. If you do, put two +1/+1 counters on it. (To forage, exile three cards from your graveyard or sacrifice a Food.)

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Flying

Sacrifice another creature: Butcher of the Horde gains your choice of vigilance, lifelink, or haste until end of turn.

At the beginning of your end step, if you don't control a Food, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Vigilance

When Byrke, Long Ear of the Law enters, put a +1/+1 counter on each of up to two target creatures.

Whenever a creature you control with a +1/+1 counter on it attacks, double the number of +1/+1 counters on it.

When Byway Courier dies, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Discard a card: Cabal Initiate gains lifelink until end of turn.

Threshold — Cabal Initiate gets +1/+2 as long as seven or more cards are in your graveyard.

, : Target player reveals X cards from their hand and you choose one of them. That player discards that card. Activate only as a sorcery.

, Sacrifice a creature: Target creature gets -2/-2 until end of turn.

, Exile a creature card from your graveyard: Target creature gets -2/-2 until end of turn.

, , Exile two cards from your graveyard: Return target creature card from your graveyard to your hand.