As an additional cost to cast this spell, sacrifice a creature.

Return a creature card from your graveyard to the battlefield, then return another creature card from your graveyard to your hand.

Until end of turn, if damage would be dealt to any creature, you may have that damage dealt to you instead.

Lifelink

When Blood Operative enters the battlefield, you may exile target card from a graveyard.

Whenever you surveil, if Blood Operative is in your graveyard, you may pay 3 life. If you do, return Blood Operative to your hand.

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.)

Kicker (You may pay an additional as you cast this spell.)

Destroy target creature or planeswalker with converted mana cost 2 or less. If this spell was kicked, instead destroy target creature or planeswalker.

Bloodcrazed Goblin can't attack unless an opponent has been dealt damage this turn.

Bloodcrazed Neonate attacks each combat if able.

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

Flying

At the beginning of your upkeep, mill a card.

Threshold — As long as seven or more cards are in your graveyard, Bloodcurdler gets +1/+1 and has "At the beginning of your end step, exile two cards from your graveyard."

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.)

, Sacrifice Bloodfire Dwarf: It deals 1 damage to each creature without flying.

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

, Sacrifice Bloodfire Kavu: It deals 2 damage to each creature.

Sacrifice a creature: Put a +1/+1 counter on Bloodflow Connoisseur.

Trample

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

Whenever you draw your second card each turn, Bloodhaze Wolverine gets +1/+1 and gains first strike until end of turn.

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.

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

Flying

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

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

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.)

Whenever Bloodmist Infiltrator attacks, you may sacrifice another creature. If you do, Bloodmist Infiltrator can't be blocked this turn.

When Bloodrage Brawler enters the battlefield, discard a card.

: Target player loses 3 life and you gain 3 life.

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

: Bloodshot Trainee deals 4 damage to target creature. Activate this ability only if Bloodshot Trainee's power is 4 or greater.

, Pay 2 life, Discard a card, Sacrifice a creature: Create a 5/5 black Demon creature token with flying. Activate this ability only any time you could cast a sorcery.

, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle your library.

Flying

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

Equipped creature gets +2/+0 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)

: Attach Bloodthirsty Blade to target creature an opponent controls. Activate this ability only any time you could cast a sorcery.

Haste

: Target creature with power 5 or greater gains haste until end of turn.

Flying

When Blood-Toll Harpy enters the battlefield, each player loses 1 life.

Flying

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

When Bloodwater Entity enters the battlefield, you may put target instant or sorcery card from your graveyard on top of your library.

Blooming Marsh enters the battlefield tapped unless you control two or fewer other lands.

: Add or .

You gain life equal to the number of creature cards in your graveyard.

Each noncreature, non-Equipment artifact is an Equipment with equip and "Equipped creature gets +X/+0," where X is that artifact's converted mana cost.

Enchant creature

Enchanted creature can't be blocked by blue creatures.

Enchanted creature gets +2/+2 as long as an opponent controls a blue permanent.

Put a -1/-1 counter on target creature. Blur of Blades deals 2 damage to that creature's controller.

This spell can't be countered.

Shroud (This creature can't be the target of spells or abilities.)

Tap target creature you don't control.

Overload (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

Enchant creature

Enchanted creature gets +3/+3.

Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

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.)

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

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

Whenever a player casts a black spell, Bog Gnarr gets +2/+2 until end of turn.

Bog Rats can't be blocked by Walls.

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