Blazethorn Scarecrow has haste as long as you control a red creature.

Blazethorn Scarecrow has wither as long as you control a green creature. (It deals damage to creatures in the form of -1/-1 counters.)

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

: Blazing Blade Askari becomes colorless until end of turn.

Equipped creature can't be blocked by Vampires or Zombies.

Equipped creature has ", Sacrifice Blazing Torch: Blazing Torch deals 2 damage to any target."

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

Target creature you control gains protection from the color of your choice until end of turn.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Exile target creature an opponent controls. That player reveals cards from the top of their library until a creature card is revealed. The player puts that card onto the battlefield, then shuffles the rest into their library.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Flying

Whenever you cast an enchantment spell, put a +1/+1 counter on Blessed Spirits.

When you cast this spell, you may put two cards your opponents own from exile into their owners' graveyards. If you do, create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add ."

Whenever you cast an enchantment spell, you may have target creature get -2/-2 until end of turn.

: Add .

, , Sacrifice Blighted Gorge: It deals 2 damage to any target.

: Target player loses 1 life.

, : Search your library for a Rebel permanent card with converted mana cost 3 or less and put it onto the battlefield. Then shuffle your library.

All creatures lose trample until end of turn. If a creature would deal combat damage to a creature this turn, it deals double that damage to that creature instead.

: Target spell or permanent becomes the color of your choice until end of turn.

Devoid (This card has no color.)

, : Tap target creature. ( represents colorless mana.)

Equipped creature has "Unattach Blinding Powder: Prevent all combat damage that would be dealt to this creature this turn."

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

Creatures your opponents control get -4/-0 until end of turn.

Draw a card.

At the beginning of each player's precombat main phase, if Blinkmoth Urn is untapped, that player adds for each artifact they control.

Whenever you cast an instant or sorcery spell, Blistercoil Weird gets +1/+1 until end of turn. Untap it.

Defender (This creature can't attack.)

Trample, haste

At the beginning of the end step, sacrifice Blistering Firecat.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Blisterstick Shaman enters the battlefield, it deals 1 damage to any target.

Flying

: Untap Blizzard Elemental.

Flash

Flying

When Blizzard Strix enters the battlefield, if you control another snow permanent, exile target permanent other than Blizzard Strix. Return that card to the battlefield under its owner's control at the beginning of the next end step.

, Sacrifice Blockbuster: It deals 3 damage to each tapped creature and each player.

Sacrifice another creature: Blood Bairn gets +2/+2 until end of turn.

As long as it's your turn, Blood Burglar has lifelink.(Damage dealt by this creature also causes you to gain that much life.)

(: Add or .)

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Cast this spell only before the combat damage step.

Target attacking or blocking creature gets +4/+0 until end of turn. Destroy that creature at the beginning of the next end step.

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)

First strike (This creature deals combat damage before creatures without first strike.)

Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life.

If you would draw a card while you have no cards in hand, instead draw two cards and lose 1 life.

At the beginning of your upkeep, you may sacrifice Blood Speaker. If you do, search your library for a Demon card, reveal that card, put it into your hand, then shuffle your library.

Whenever a Demon enters the battlefield under your control, return Blood Speaker from your graveyard to your hand.

Flying, trample

At the beginning of your upkeep, each player loses 1 life. Put a +1/+1 counter on Blood Tyrant for each 1 life lost this way.

Whenever a player loses the game, put five +1/+1 counters on Blood Tyrant.

Whenever you gain life, put a +1/+1 counter on Bloodbond Vampire.

Haste

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Whenever Blood-Chin Rager attacks, Warrior creatures you control gain menace until end of turn. (They can't be blocked except by two or more creatures.)

Heroic — Whenever you cast a spell that targets Bloodcrazed Hoplite, put a +1/+1 counter on it.

Whenever a +1/+1 counter is put on Bloodcrazed Hoplite, remove a +1/+1 counter from target creature an opponent controls.

Flash

Bloodcrazed Paladin enters the battlefield with a +1/+1 counter on it for each creature that died this turn.

Target creature gets +X/+0 until end of turn.

, Sacrifice Bloodfire Colossus: It deals 6 damage to each creature and each player.

Bloodfire Enforcers has first strike and trample as long as an instant card and a sorcery card are in your graveyard.

Enchant creature you control

, Sacrifice enchanted creature: Bloodfire Infusion deals damage equal to the sacrificed creature's power to each creature.

, : Draw a card, then discard a card.

Equipped creature gets +2/+0.

Whenever equipped creature deals combat damage to a player, create a token that's a copy of Bloodforged Battle-Axe.

Equip

Whenever Bloodhall Priest enters the battlefield or attacks, if you have no cards in hand, Bloodhall Priest deals 2 damage to any target.

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.)

Multikicker (You may pay an additional any number of times as you cast this spell.)

When Bloodhusk Ritualist enters the battlefield, target opponent discards a card for each time it was kicked.

, , Put a blood counter on Bloodletter Quill: Draw a card, then you lose 1 life for each blood counter on Bloodletter Quill.

: Remove a blood counter from Bloodletter Quill.

Lifelink

When Bloodline Necromancer enters the battlefield, you may return target Vampire or Wizard creature card from your graveyard to the battlefield.

: Target creature gains haste until end of turn.

Red creatures you control have first strike.

Sacrifice Bloodpyre Elemental: It deals 4 damage to target creature. Activate this ability only any time you could cast a sorcery.