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.

Nonbasic lands are Mountains.

Choose a card type. Target opponent reveals their hand. Blood Oath deals 3 damage to that player for each card of the chosen type revealed this way. (Artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal are card types.)

Bloodrock Cyclops attacks each combat if able.

{T}, Sacrifice a creature: Bloodshot Cyclops deals damage equal to the sacrificed creature’s power to any target.

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

Flying

When Bogardan Phoenix dies, exile it if it had a death counter on it. Otherwise, return it to the battlefield under your control and put a death counter on it.

Destroy all Islands.

Target creature attacks this turn if able.

Draw a card.

{R}, {T}, Discard a card: Target creature can’t block this turn.

Gain control of all permanents you own. (This effect lasts indefinitely.)

Cycling {2} ({2}, Discard this card: Draw a card.)

Branded Brawlers can’t attack if defending player controls an untapped land.

Branded Brawlers can’t block if you control an untapped land.

Enchant creature

Cumulative upkeep {R} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Enchanted creature’s controller can’t cast creature spells.

Brassclaw Orcs can’t block creatures with power 2 or greater.

Enchant creature

Enchanted creature gets +1/+1 for each other creature you control.

Until end of turn, all creatures gain “{T}: This creature deals damage equal to its power to target creature.”

{1}{R}{R}: Brothers of Fire deals 1 damage to any target and 1 damage to you.

Activated abilities of nontoken Rebels cost an additional “Sacrifice a land” to activate.

Destroy X target artifacts. Builder’s Bane deals damage to each player equal to the number of artifacts they controlled that were put into a graveyard this way.

At the beginning of your upkeep, Bulwark deals X damage to target opponent, where X is the number of cards in your hand minus the number of cards in that player’s hand.

{1}{R}{R}: Burning Palm Efreet deals 2 damage to target creature with flying and that creature loses flying until end of turn.

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

{R}{R}: Burning Shield Askari gains first strike until end of turn.

Counter target instant spell if it’s blue.

Draw a card at the beginning of the next turn’s upkeep.

Enchant creature

Enchanted creature has mountainwalk. (It can’t be blocked as long as defending player controls a Mountain.)

Flying

{1}, Discard a card at random: Canyon Drake gets +2/+0 until end of turn.

Mountainwalk (This creature can’t be blocked as long as defending player controls a Mountain.)

You may exile a red card from your hand rather than pay this spell’s mana cost.

Cave-In deals 2 damage to each creature and each player.

Whenever Cave People attacks, it gets +1/-2 until end of turn.

{1}{R}{R}, {T}: Target creature gains mountainwalk until end of turn. (It can’t be blocked as long as defending player controls a Mountain.)

Mountainwalk (This creature can’t be blocked as long as defending player controls a Mountain.)

{R}: Cavern Crawler gets +1/-1 until end of turn.

No more than two creatures can attack each combat.

No more than two creatures can block each combat.

Enchant creature

Enchanted creature gets +1/+1 and has mountainwalk. (It can’t be blocked as long as defending player controls a Mountain.)

When Ceremonial Guard attacks or blocks, destroy it at end of combat.

Chain Lightning deals 3 damage to any target. Then that player or that permanent’s controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.

{R}{R}{R}, {T}: Destroy target artifact creature.

Choose one —

• Destroy target Wall.

• Chaos Charm deals 1 damage to target creature.

• Target creature gains haste until end of turn.

{R}: Exile the top card of your library. If that card is a land card, Chaos Harlequin gets -4/-0 until end of turn. Otherwise, Chaos Harlequin gets +2/+0 until end of turn.

Target spell or permanent becomes red. (Its mana symbols remain unchanged.)

First strike

At the beginning of your upkeep, target opponent gains control of Chaos Lord if the number of permanents is even.

Chaos Lord can attack as though it had haste unless it entered the battlefield this turn.

At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.

Creatures with flying can block only creatures with flying.

Creatures without flying have reach. (They can block creatures with flying.)

Chaotic Goo enters the battlefield with three +1/+1 counters on it.

At the beginning of your upkeep, you may flip a coin. If you win the flip, put a +1/+1 counter on Chaotic Goo. If you lose the flip, remove a +1/+1 counter from Chaotic Goo.

Destroy target creature. If a white creature dies this way, Cinder Cloud deals damage to that creature’s controller equal to the creature’s power.

{R}: Cinder Crawler gets +1/+0 until end of turn. Activate only if Cinder Crawler is blocked.

{X}{R}, {T}, Sacrifice Cinder Elemental: It deals X damage to any target.

At the beginning of your upkeep, Cinder Giant deals 2 damage to each other creature you control.

{2}{R}, {T}: Reveal any number of red cards in your hand. Cinder Seer deals X damage to any target, where X is the number of cards revealed this way.

Defender

When Cinder Wall blocks, destroy it at end of combat.

At the beginning of each player’s end step, Citadel of Pain deals X damage to that player, where X is the number of untapped lands they control.

Whenever a creature you control becomes blocked, Close Quarters deals 1 damage to any target.

Mountainwalk (This creature can’t be blocked as long as defending player controls a Mountain.)

{R}: Colos Yearling gets +1/+0 until end of turn.

Cone of Flame deals 1 damage to any target, 2 damage to another target, and 3 damage to a third target.

Enchant land

You control enchanted land.

Enchant non-Wall creature

Enchanted creature gets +1/+0.

At the beginning of your upkeep, put a +1/+0 counter on enchanted creature. If that creature has three or more +1/+0 counters on it, it deals damage equal to its power to its controller, then destroy that creature and it can’t be regenerated.

{R}, {T}: Convulsing Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {R} to end this effect.

Enchanted creature can’t block.

Flying

When you control no artifacts, sacrifice Covetous Dragon.

Whenever a source deals damage to Crag Saurian, that source’s controller gains control of Crag Saurian.

You may sacrifice a Mountain rather than pay this spell’s mana cost.

Destroy target artifact.

Echo {4}{R}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Crater Hellion enters the battlefield, it deals 4 damage to each other creature.

Craven Giant can’t block.

Creatures with mountainwalk can be blocked as though they didn’t have mountainwalk.