Defender

, : Each opponent loses X life, where X is the number of creatures with defender you control.

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

: Add .

, , Sacrifice Blighted Fen: Target opponent sacrifices a creature.

, Sacrifice a Swamp: Target creature gets +1/+1 until end of turn.

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

: Add .

, , Sacrifice Blighted Woodland: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

: Transform Blightreaper Thallid. Activate only as a sorcery. ( can be paid with either or 2 life.)

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.

Strive — This spell costs more to cast for each target beyond the first.

Any number of target creatures can't block this turn.

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.)

Double strike

Teleport — : Blink Dog phases out. (Treat it and anything attached to it as though they don't exist until your next turn.)

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

Choose target creature you control and target creature you don't control. If you control three or more snow permanents, the creature you control gets +1/+0 and gains indestructible until end of turn. Then those creatures fight each other. (Each deals damage equal to its power to the other.)

Flash

Flying

When Blizzard Strix enters, 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.

Flying

Bloatfly Swarm enters with five +1/+1 counters on it.

If damage would be dealt to Bloatfly Swarm while it has a +1/+1 counter on it, prevent that damage, remove that many +1/+1 counters from it, then give each player a rad counter for each +1/+1 counter removed this way.

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.

: Blood Cultist deals 1 damage to target creature.

Whenever a creature dealt damage by Blood Cultist this turn dies, put a +1/+1 counter on Blood Cultist.

Target creature fights another target creature. (Each deals damage equal to its power to the other.)

, Sacrifice another creature: Put a +1/+1 counter on Blood Host and you gain 2 life.

Blood Hypnotist can't block.

Whenever you sacrifice one or more Blood tokens, target creature can't block this turn. This ability triggers only once each turn.

If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.

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

, Sacrifice a creature: Blood Rites deals 2 damage to any target.

When Bloodboil Sorcerer enters, you take the initiative.

Crown of Madness — , Sacrifice an artifact or creature: Goad target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

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.)

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.)

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

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

Trample

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

Flying

Bloodied Ghost enters with a -1/-1 counter on it.

Changeling (This card is every creature type.)

As Bloodline Pretender enters, choose a creature type.

Whenever another creature you control of the chosen type enters, put a +1/+1 counter on Bloodline Pretender.

Red creatures you control have first strike.

When Bloodrage Brawler enters, discard a card.

: Bloodshot Trainee deals 4 damage to target creature. Activate 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 only as a sorcery.

At the beginning of your end step, if you gained life this turn, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

: Each opponent loses 2 life and you gain 2 life.

Bloodsworn Knight's power and toughness are each equal to the number of creature cards in your graveyard.

, Discard a card: Bloodsworn Knight gains indestructible until end of turn. Tap it. (Damage and effects that say "destroy" don't destroy it.)

Flying

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

: 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.

Flying

When Bloodtithe Collector enters, if an opponent lost life this turn, each opponent discards a card.

Flying

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

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

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

At the beginning of your end step, put a +1/+1 counter on target creature you control.

You gain hexproof until your next turn. You gain 2 life.

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.)

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

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.

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.)

Creatures attacking you get -1/-0.

At the beginning of each end step, if you were dealt 4 or more damage this turn, exile Boarded Window.

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