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.

Flying

: Create a 2/2 black Vampire creature token with flying.

: Transform Bloodline Keeper. Activate only if you control five or more Vampires.

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.

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

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

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

Enchant creature

Enchanted creature attacks each combat if able.

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

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.

: Put a devotion counter on Bloodthirsty Ogre.

: Target creature gets -X/-X until end of turn, where X is the number of devotion counters on Bloodthirsty Ogre. Activate only if you control a Demon.

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

: For each color among permanents you control, add one mana of that color.

Whenever a creature dies, if it had a -1/-1 counter on it, put a -1/-1 counter on target creature.

Choose one —

• Counter target red spell.

• Destroy target red permanent.

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.

Enchant creature

Enchanted creature has protection from blue. This effect doesn't remove Blue Ward.

Sliver creatures you control have haste. (They can attack and as soon as they come under your control.)

Tap target creature you don't control.

Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Enchant creature

Enchanted creature gets +3/+3.

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

You may have Body Double enter as a copy of any creature card in a graveyard.

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.

Protection from white

At the beginning of your upkeep, sacrifice Bog Elemental unless you sacrifice a land.

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

Flying (This creature can't be blocked except by creatures with flying or reach.)

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

Bog Serpent can't attack unless defending player controls a Swamp.

When you control no Swamps, sacrifice Bog Serpent.

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.)

When Bogardan Firefiend dies, it deals 2 damage to target creature.

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

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

Flash (You may cast this spell any time you could cast an instant.)

When Bogardan Rager enters, target creature gets +4/+0 until end of turn.

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

, Sacrifice Boggart Arsonists: Destroy target Scarecrow or Plains.

, Sacrifice Boggart Forager: Target player shuffles their library.

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

, Sacrifice Boggart Loggers: Destroy target Treefolk or Forest.

Haste

Wither (This deals damage to creatures in the form of -1/-1 counters.)

As long as you control a Faerie, Boggart Sprite-Chaser gets +1/+1 and has flying.

Destroy all Islands.

Destroy all Islands.

Bojuka Brigand can't block.

Whenever Bojuka Brigand or another Ally you control enters, you may put a +1/+1 counter on Bojuka Brigand.

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

Creatures you control get +1/+1 until end of turn. If this spell was kicked, instead creatures you control get +2/+2 and gain first strike until end of turn.

Cowards can't block Warriors.

: Target creature becomes a Coward until end of turn.

: Target creature becomes a Warrior until end of turn.

: Put a fuse counter on target creature.

At the beginning of your upkeep, put a fuse counter on each creature with a fuse counter on it.

Whenever a creature has four or more fuse counters on it, remove all fuse counters from it and destroy it. That creature deals 4 damage to its controller.

When Bond Beetle enters, put a +1/+1 counter on target creature.

Defender, haste

: Draw a card, then discard a card.

Flash (You may cast this spell any time you could cast an instant.)

Enchant creature

Enchanted creature doesn't untap during its controller's untap step.

, : All creatures get -1/-0 until end of turn.

, : The next time a source of your choice would deal damage to you this turn, prevent that damage. Exile cards from the top of your library equal to the damage prevented this way.

: Until end of turn, Bone Shaman gains "Creatures dealt damage by Bone Shaman this turn can't be regenerated this turn."

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

Destroy target creature.