Name: Nykthos, Shrine to Nyx Type: Legendary Land Rules Text: {T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.) Set/Rarity: Pro Tour Promos rare, Theros rare, The List rare, Explorer Anthology 2 rare Price: $52.18

Name: Nyla, Shirshu Sleuth Cost: 4B Type: Legendary Creature -- Mole Beast Pow/Tgh: 4/5 Rules Text: When Nyla enters, exile up to one target creature card from your graveyard. If you do, you lose X life and create X Clue tokens, where X is that card's mana value. (A Clue token is an artifact with "{2}, Sacrifice this token: Draw a card.") At the beginning of your end step, if you control no Clues, return target card exiled with Nyla to its owner's hand. Set/Rarity: Avatar: The Last Airbender Eternal rare Price: $0.16

Name: Nyx Infusion Cost: 2B Type: Enchantment -- Aura Rules Text: Enchant creature Enchanted creature gets +2/+2 as long as it's an enchantment. Otherwise, it gets -2/-2. Set/Rarity: Journey into Nyx common Price: $0.03

Name: Nyx Lotus Cost: 4 Type: Legendary Artifact Rules Text: Nyx Lotus enters tapped. {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.) Set/Rarity: Magic Online Promos rare, Theros Beyond Death Promos rare, Theros Beyond Death rare Price: $5.57

Name: Nyx-Fleece Ram Cost: 1W Type: Enchantment Creature -- Sheep Pow/Tgh: 0/5 Rules Text: At the beginning of your upkeep, you gain 1 life. Set/Rarity: Journey into Nyx uncommon, Masters 25 uncommon, Historic Anthology 2 uncommon, The List uncommon, Foundations Jumpstart uncommon, Tarkir: Dragonstorm Commander uncommon Price: $0.25

Name: Nyxathid Cost: 1BB Type: Creature -- Elemental Pow/Tgh: 7/7 Rules Text: As this creature enters, choose an opponent. This creature gets -1/-1 for each card in the chosen player's hand. Set/Rarity: Conflux rare, Battlebond rare, Jumpstart rare Price: $0.33

Name: Nyxborn Courser Cost: 1WW Type: Enchantment Creature -- Centaur Scout Pow/Tgh: 2/4 Rules Text: Set/Rarity: Theros Beyond Death common Price: $0.02

Name: Nyxborn Eidolon Cost: 1B Type: Enchantment Creature -- Spirit Pow/Tgh: 2/1 Rules Text: Bestow {4}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Enchanted creature gets +2/+1. Set/Rarity: Born of the Gods common Price: $0.06

Name: Nyxborn Marauder Cost: 2BB Type: Enchantment Creature -- Minotaur Pow/Tgh: 4/3 Rules Text: Set/Rarity: Theros Beyond Death common Price: $0.06

Name: Nyxborn Shieldmate Cost: W Type: Enchantment Creature -- Human Soldier Pow/Tgh: 1/2 Rules Text: Bestow {2}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Enchanted creature gets +1/+2. Set/Rarity: Born of the Gods common Price: $0.16

Name: Nyxborn Unicorn Cost: 1W Type: Enchantment Creature -- Unicorn Pow/Tgh: 2/2 Rules Text: Bestow {3}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Enchanted creature gets +2/+2 and has mentor. Set/Rarity: Modern Horizons 3 common Price: $0.19

Name: O-Naginata Cost: 1 Type: Artifact -- Equipment Rules Text: This Equipment can be attached only to a creature with power 3 or greater. Equipped creature gets +3/+0 and has trample. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.) Set/Rarity: Saviors of Kamigawa uncommon, Double Masters uncommon, The List uncommon Price: $0.47

Name: Oaken Brawler Cost: 3W Type: Creature -- Treefolk Warrior Pow/Tgh: 2/4 Rules Text: When this creature enters, clash with an opponent. If you win, put a +1/+1 counter on this creature. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.) Set/Rarity: Lorwyn common, The List common Price: $0.12

Name: Oasis Type: Land Rules Text: {T}: Prevent the next 1 damage that would be dealt to target creature this turn. Set/Rarity: Arabian Nights uncommon, Fourth Edition uncommon, Fourth Edition Foreign Black Border uncommon, Rinascimento uncommon, Renaissance uncommon, Masters Edition IV common Price: $0.33

Name: Oasis Gardener Cost: 3 Type: Artifact Creature -- Scarecrow Pow/Tgh: 2/2 Rules Text: When this creature enters, you gain 2 life. {T}: Add one mana of any color. Set/Rarity: Outlaws of Thunder Junction common Price: $0.09

Name: Oath of Ghouls Cost: 1B Type: Enchantment Rules Text: At the beginning of each player's upkeep, that player chooses target player whose graveyard has fewer creature cards in it than their graveyard does and is their opponent. The first player may return a creature card from their graveyard to their hand. Set/Rarity: Exodus rare Price: $4.05

Name: Oath of Gideon Cost: 2W Type: Legendary Enchantment Rules Text: When Oath of Gideon enters, create two 1/1 white Kor Ally creature tokens. Each planeswalker you control enters with an additional loyalty counter on it. Set/Rarity: Oath of the Gatewatch Promos rare, Oath of the Gatewatch rare, Commander Masters rare, Pioneer Masters uncommon Price: $0.22

Name: Oath of Kaya Cost: 1WB Type: Legendary Enchantment Rules Text: When Oath of Kaya enters, it deals 3 damage to any target and you gain 3 life. Whenever an opponent attacks a planeswalker you control with one or more creatures, Oath of Kaya deals 2 damage to that player and you gain 2 life. Set/Rarity: War of the Spark Promos rare, War of the Spark rare Price: $0.31

Name: Oath of Lieges Cost: 1W Type: Enchantment Rules Text: At the beginning of each player's upkeep, that player chooses target player who controls more lands than they do and is their opponent. The first player may search their library for a basic land card, put that card onto the battlefield, then shuffle. Set/Rarity: Exodus rare, The List rare Price: $4.16

Name: Oath of Liliana Cost: 2B Type: Legendary Enchantment Rules Text: When Oath of Liliana enters, each opponent sacrifices a creature of their choice. At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, create a 2/2 black Zombie creature token. Set/Rarity: Eldritch Moon Promos rare, Eldritch Moon rare, Pioneer Masters uncommon Price: $0.42