When Blood Spatter Analysis enters, it deals 3 damage to target creature an opponent controls.

Whenever one or more creatures die, mill a card and put a bloodstain counter on Blood Spatter Analysis. Then sacrifice it if it has five or more bloodstain counters on it. When you do, return target creature card from your graveyard to your hand.

Kicker—Tap an untapped Vampire you control. (You may tap a Vampire you control in addition to any other costs as you cast this spell.)

Target opponent loses half their life, rounded up. If this spell was kicked, you gain life equal to the life lost this way.

Flying

At the beginning of combat on your turn, up to one target Blood token you control becomes a 2/2 black Bat creature with flying and haste in addition to its other types.

, Sacrifice another Warrior creature: Target player loses X life and you gain X life, where X is the sacrificed creature's power.

Bloodcrazed Neonate attacks each combat if able.

Whenever Bloodcrazed Neonate deals combat damage to a player, put a +1/+1 counter on it.

As long as you control an enchantment, Blood-Cursed Knight gets +1/+1 and has lifelink. (Damage dealt by this creature also causes you to gain that much life.)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

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

Bloodghast can't block.

Bloodghast has haste as long as an opponent has 10 or less life.

Landfall — Whenever a land you control enters, you may return Bloodghast from your graveyard to the battlefield.

Whenever Bloodhall Priest enters 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, target opponent discards a card for each time it was kicked.

When the names of three or more nonland permanents begin with the same letter, sacrifice Bloodletter. If you do, it deals 2 damage to each creature and each player.

, , 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.

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters with three +1/+1 counters on it.)

Flying

Whenever you cast a Vampire creature spell, it gains bloodthirst 3.

Red creatures you control have first strike.

Sacrifice Bloodpyre Elemental: It deals 4 damage to target creature. Activate only as a sorcery.

Toxic 2 (Players dealt combat damage by this creature also get two poison counters. A player with ten or more poison counters loses the game.)

When Bloodroot Apothecary enters, you and target opponent each create a Treasure token.

Whenever an opponent sacrifices a noncreature token, that player gets two poison counters.

, Sacrifice a creature: Bloodshot Cyclops deals damage equal to the sacrificed creature's power to any target.

, Pay 2 life, Discard a card, Sacrifice a creature: Create a 5/5 black Demon creature token with flying. Activate only as a sorcery.

Devour 1 (As this enters, you may sacrifice any number of creatures. This creature enters with that many +1/+1 counters on it.)

Each other creature you control enters with an additional X +1/+1 counters on it, where X is the number of +1/+1 counters on Bloodspore Thrinax.

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 Bloodstoke Howler is turned face up, Beast creatures you control get +3/+0 until end of turn.

Whenever you cast a spell, if that spell was kicked, Bloodstone Goblin gets +1/+1 and gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Flying

Commander creatures you control get +2/+2 and have haste.

Flying, trample

Whenever Bloodthirster deals combat damage to a player, untap it. After this phase, there is an additional combat phase.

Bloodthirster can't attack a player it has already attacked this turn.

Flying

Whenever you gain life, put a +1/+1 counter on Bloodthirsty Aerialist.

Flying, deathtouch

Whenever an opponent loses life, you gain that much life. (Damage causes loss of life.)

Equipped creature gets +2/+1.

Equip—Pay or discard a card.

Sacrifice a creature: Bloodthrone Vampire gets +2/+2 until end of turn.

When Bloodtithe Harvester enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, Sacrifice Bloodtithe Harvester: Target creature gets -X/-X until end of turn, where X is twice the number of Blood tokens you control. Activate only as a sorcery.

Flying

, Pay 2 life: Put a +1/+1 counter on Bloodtracker.

When Bloodtracker leaves the battlefield, draw a card for each +1/+1 counter on it.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Gift a Treasure (You may promise an opponent a gift as you cast this spell. If you do, they create a Treasure token before its other effects. It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Blooming Blast deals 2 damage to target creature. If the gift was promised, Blooming Blast also deals 3 damage to that creature's controller.

Whenever Blossoming Tortoise enters or attacks, mill three cards, then return a land card from your graveyard to the battlefield tapped.

Activated abilities of lands you control cost less to activate.

Land creatures you control get +1/+1.

Target opponent exiles a creature or planeswalker they control with the greatest mana value among creatures and planeswalkers they control.

Blow Off Steam deals 1 damage to any target. (Then exile this card. You may cast the creature later from exile.)

Choose one —

• Counter target red spell.

• Destroy target red permanent.

Gain control of target creature with mana value X or less. If X is 5 or more, create a token that's a copy of that creature.

Partner with Owen Grady, Raptor Trainer (When this creature enters, target player may put Owen into their hand from their library, then shuffle.)

For each kind of counter on Blue, Loyal Raptor, each other Dinosaur you control enters with a counter of that kind on it.

When Blurry Visionary enters the battlefield, look at the top two cards of your library and put them back-to-back in the same sleeve with either card in front. They become a modal double-faced card for the rest of the game. Then put that card into your hand. (You can play either face of that double-faced card. Make sure to reset it when the game ends.)

: Boa Constrictor gets +3/+3 until end of turn.

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 in a random order.)

Trample

Other red creatures you control get +1/+1.

Other green creatures you control get +1/+1.

When Body Snatcher enters, exile it unless you discard a creature card.

When Body Snatcher dies, exile it and return target creature card from your graveyard to the battlefield.

: Add .

Bog Rats can't be blocked by Walls.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Flash

Flying

When Bogardan Hellkite enters, it deals 5 damage divided as you choose among any number of targets.

Plainswalk (This creature can't be blocked as long as defending player controls a Plains.)

, Sacrifice Boggart Arsonists: Destroy target Scarecrow or Plains.

As Boggart Bog enters, you may pay 3 life. If you don't, it enters tapped.

: Add .