Name: Court of Locthwain Cost: 2BB Type: Enchantment Rules Text: When this enchantment enters, you become the monarch. At the beginning of your upkeep, exile the top card of target opponent's library. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it. If you're the monarch, until end of turn, you may cast a spell from among cards exiled with this enchantment without paying its mana cost. Set/Rarity: Wilds of Eldraine Commander rare Price: $3.08

Name: Covenant of Blood Cost: 6B Type: Sorcery Rules Text: Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Covenant of Blood deals 4 damage to any target and you gain 4 life. Set/Rarity: Magic 2015 common, The List common Price: $0.02

Name: Cover of Darkness Cost: 1B Type: Enchantment Rules Text: As this enchantment enters, choose a creature type. Creatures of the chosen type have fear. (They can't be blocked except by artifact creatures and/or black creatures.) Set/Rarity: Onslaught rare, Salvat 2005 rare, Assassin's Creed rare Price: $3.76

Name: Cover of Winter Cost: 2W Type: Snow Enchantment Rules Text: Cumulative upkeep {S} (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. {S} can be paid with one mana from a snow source.) If a creature would deal combat damage to you and/or one or more creatures you control, prevent X of that damage, where X is the number of age counters on this enchantment. {S}: Put an age counter on this enchantment. Set/Rarity: Coldsnap rare Price: $0.50

Name: Covert Cutpurse Cost: 2B Type: Creature -- Human Rogue Pow/Tgh: 2/1 Rules Text: When this creature enters, destroy target creature you don't control that was dealt damage this turn. Disturb {4}{B} (You may cast this card from your graveyard transformed for its disturb cost.) [Front face. Transforms into Covetous Geist.] Set/Rarity: Innistrad: Midnight Hunt uncommon, Innistrad: Double Feature uncommon Price: $0.04

Name: Coveted Jewel Cost: 6 Type: Artifact Rules Text: When this artifact enters, draw three cards. {T}: Add three mana of any one color. Whenever one or more creatures an opponent controls attack you and aren't blocked, that player draws three cards and gains control of this artifact. Untap it. Set/Rarity: Treasure Chest rare, Commander 2018 rare, Secret Lair Drop rare, The List rare, Commander 2021 rare, Starter Commander Decks rare, March of the Machine Commander rare, Modern Horizons 3 Commander rare, Bloomburrow Commander rare, Final Fantasy Commander rare Price: $0.12

Name: Coveted Prize Cost: 4B Type: Sorcery Rules Text: This spell costs {1} less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) Search your library for a card, put it into your hand, then shuffle. If you have a full party, you may cast a spell with mana value 4 or less from your hand without paying its mana cost. Set/Rarity: Magic Online Promos rare, Zendikar Rising rare, Zendikar Rising Promos rare Price: $0.26

Name: Covetous Elegy Cost: 4WB Type: Sorcery Rules Text: Each player chooses up to two creatures they control, then sacrifices the rest. Then you create a tapped Treasure token for each creature your opponents control. Set/Rarity: Ravnica: Clue Edition rare Price: $0.28

Name: Covetous Geist Type: Creature -- Spirit Rogue Pow/Tgh: 2/2 Rules Text: Flying, deathtouch If Covetous Geist would be put into a graveyard from anywhere, exile it instead. [Back face. Transforms from Covert Cutpurse. B color indicator.] Set/Rarity: Innistrad: Midnight Hunt uncommon, Innistrad: Double Feature uncommon Price: $0.04

Name: Cowed by Wisdom Cost: W Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature can't attack or block unless its controller pays {1} for each card in your hand. Set/Rarity: Saviors of Kamigawa common Price: $0.11

Name: Cower in Fear Cost: 1BB Type: Instant Rules Text: Creatures your opponents control get -1/-1 until end of turn. Set/Rarity: Magic 2013 uncommon, Modern Masters 2017 common, The List common Price: $0.10

Name: Crabomination Cost: 4BB Type: Creature -- Crab Demon Pow/Tgh: 5/5 Rules Text: Emerge from artifact {5}{B}{B} (You may cast this spell by sacrificing an artifact and paying the emerge cost reduced by that artifact's mana value.) When this creature enters, target opponent exiles the top card of their library, a card at random from their graveyard, and a card at random from their hand. You may cast a spell from among cards exiled this way without paying its mana cost. Set/Rarity: Modern Horizons 3 rare, Modern Horizons 3 Promos rare Price: $0.23

Name: Crack in Time Cost: 3W Type: Enchantment Rules Text: Vanishing 3 (This enchantment enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) When this enchantment enters and at the beginning of your first main phase, exile target creature an opponent controls until this enchantment leaves the battlefield. Set/Rarity: Doctor Who rare Price: $0.11

Name: Crackdown Cost: 2W Type: Enchantment Rules Text: Nonwhite creatures with power 3 or greater don't untap during their controllers' untap steps. Set/Rarity: Mercadian Masques rare, Mystery Booster 2 rare Price: $0.88

Name: Crackdown Construct Cost: 4 Type: Artifact Creature -- Construct Pow/Tgh: 2/2 Rules Text: Whenever you activate an ability of an artifact or creature that isn't a mana ability, this creature gets +1/+1 until end of turn. Set/Rarity: Aether Revolt uncommon, The List uncommon, Pioneer Masters uncommon Price: $0.13

Name: Cracked Skull Cost: 2B Type: Enchantment -- Aura Rules Text: Enchant creature When this Aura enters, look at target player's hand. You may choose a nonland card from it. That player discards that card. When enchanted creature is dealt damage, destroy it. Set/Rarity: Duskmourn: House of Horror common Price: $0.07

Name: Cradle of Vitality Cost: 3W Type: Enchantment Rules Text: Whenever you gain life, you may pay {1}{W}. If you do, put a +1/+1 counter on target creature for each 1 life you gained. Set/Rarity: Shards of Alara rare, Commander 2013 rare, Jumpstart rare Price: $0.37

Name: Cradle of the Accursed Type: Land -- Desert Rules Text: {T}: Add {C}. {3}, {T}, Sacrifice this land: Create a 2/2 black Zombie creature token. Activate only as a sorcery. Set/Rarity: Amonkhet common Price: $0.08

Name: Cradle to Grave Cost: 1B Type: Instant Rules Text: Destroy target nonblack creature that entered this turn. Set/Rarity: Planar Chaos common Price: $0.11

Name: Cramped Vents Cost: 3B Type: Enchantment -- Room Rules Text: When you unlock this door, this Room deals 6 damage to target creature an opponent controls. You gain life equal to the excess damage dealt this way. (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) [This is half of the split card Cramped Vents // Access Maze.] Set/Rarity: Duskmourn: House of Horror Commander rare Price: $0.15