, : Target land becomes the basic land type of your choice until end of turn.

Flying

Creatures you control have "Whenever this creature becomes the target of a spell or ability, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand. This ability triggers only twice each turn."

Whenever a Warrior attacks, you may have its controller create a 1/1 white Warrior creature token that's tapped and attacking.

: Untap all attacking creatures. They gain trample, lifelink, and haste until end of turn. After this phase, there is an additional combat phase. Activate only during combat.

Flying

When Narcomoeba is put into your graveyard from your library, you may put it onto the battlefield.

When Navigator's Compass enters, you gain 3 life.

: Until end of turn, target land you control becomes the basic land type of your choice in addition to its other types.

Skip your draw step.

At the beginning of your end step, you may pay any amount of life. If you do, draw that many cards.

Your maximum hand size is five.

If a card or token would be put into your graveyard from anywhere, exile it instead.

, Sacrifice Necrogen Spellbomb: Target player discards a card.

, Sacrifice Necrogen Spellbomb: Draw a card.

When Necromancer's Covenant enters, exile all creature cards from target player's graveyard, then create a 2/2 black Zombie creature token for each card exiled this way.

Zombies you control have lifelink.

Enchant creature

Creatures you control that are enchanted get +1/+1.

If a creature you control that's enchanted would die, return it to its owner's hand instead.

You may cast Necromancy as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

When Necromancy enters, if it's on the battlefield, it becomes an Aura with "enchant creature put onto the battlefield with Necromancy." Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it. When Necromancy leaves the battlefield, that creature's controller sacrifices it.

Put target creature card from a graveyard onto the battlefield under your control.

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, that creature enters with two additional +1/+1 counters on it.

Flying

Whenever Necromaster Dragon deals combat damage to a player, you may pay . If you do, create a 2/2 black Zombie creature token and each opponent mills two cards.

Equipped creature gets +1/+1.

When equipped creature transforms, transform Neglected Heirloom.

Equip

At the beginning of combat on your turn, draw a card. Then you may exile an artifact or creature card from your hand. If you do, create a token that's a copy of the exiled card, except it's a 3/3 Golem artifact creature in addition to its other types.

, Sacrifice Nihil Spellbomb: Exile target player's graveyard.

When Nihil Spellbomb is put into a graveyard from the battlefield, you may pay . If you do, draw a card.

, : Tap target creature.

Threshold — , : Tap two target creatures. Activate only if seven or more cards are in your graveyard.

Nomad Outpost enters tapped.

: Add , , or .

: Add one mana of any color.

: The next 1 damage that would be dealt to Nomads en-Kor this turn is dealt to target creature you control instead.

If it's neither day nor night, it becomes day as Obsessive Astronomer enters.

Whenever day becomes night or night becomes day, discard up to two cards, then draw that many cards.

Choose two —

• Return target creature card with mana value 2 or less from your graveyard to the battlefield.

• You gain 4 life.

• Counter target creature spell.

• Draw a card.

Omarthis, Ghostfire Initiate enters with X +1/+1 counters on it.

Whenever you put one or more +1/+1 counters on another colorless creature, you may put a +1/+1 counter on Omarthis.

When Omarthis dies, manifest a number of cards from the top of your library equal to the number of counters on it.

Look at the top three cards of your library, then put them back in any order. You may shuffle.

Draw a card.

Players can't draw cards.

At the beginning of each player's draw step, that player exiles the top card of their library. If it's a land card, the player puts it onto the battlefield. Otherwise, the player casts it without paying its mana cost if able.

Flash

When Omen of the Dead enters, return target creature card from your graveyard to your hand.

, Sacrifice Omen of the Dead: Scry 2.

Flash

When Omen of the Hunt enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

, Sacrifice Omen of the Hunt: Scry 2.

Flash

When Omen of the Sun enters, create two 1/1 white Human Soldier creature tokens and you gain 2 life.

, Sacrifice Omen of the Sun: Scry 2.

Vanishing 4 (This land enters the battlefield with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

: Add , , or .

When Omenspeaker enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

, , Sacrifice Ominous Parcel: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

, , Sacrifice Ominous Parcel: It deals 4 damage to target creature.

Whenever you draw a card, put a foreshadow counter on Ominous Seas.

Remove eight foreshadow counters from Ominous Seas: Create an 8/8 blue Kraken creature token.

Cycling (, Discard this card: Draw a card.)

When Ominous Traveler enters the battlefield, draft a card from Ominous Traveler's spellbook. That card perpetually gains "You may spend mana as though it were mana of any color to cast this spell" and "When you cast this spell, return a creature named Ominous Traveler you control to its owner's hand."

When Omnath, Locus of Creation enters, draw a card.

Landfall — Whenever a land you control enters, you gain 4 life if this is the first time this ability has resolved this turn. If it's the second time, add . If it's the third time, Omnath deals 4 damage to each opponent and each planeswalker you don't control.

Landfall — Whenever a land you control enters, create a 5/5 red and green Elemental creature token.

Whenever Omnath, Locus of Rage or another Elemental you control dies, Omnath deals 3 damage to any target.

: Target creature becomes a Frog with base power and toughness 3/3 until end of turn.

Changeling

Omnipresent Impostor has all card names.

As you search your library for one or more cards, you may choose Omnipresent Impostor as one of those cards. (For example, if you search for two land cards, you may find Omnipresent Impostor and a land card.)

, : You may cast an instant or sorcery spell from your hand without paying its mana cost.

Whenever Omo, Queen of Vesuva enters or attacks, put an everything counter on each of up to one target land and up to one target creature.

Each land with an everything counter on it is every land type in addition to its other types.

Each nonland creature with an everything counter on it is every creature type.

At the beginning of each upkeep, if you control no Snakes, create a 1/1 black Snake creature token with deathtouch.

, , Sacrifice Origin Spellbomb: Create a 1/1 colorless Myr artifact creature token.

When Origin Spellbomb is put into a graveyard from the battlefield, you may pay . If you do, draw a card.

At the beginning of your upkeep, put two eon counters on Out of the Tombs, then mill cards equal to the number of eon counters on it.

If you would draw a card while your library has no cards in it, instead return a creature card from your graveyard to the battlefield. If you can't, you lose the game.

Creatures you control get +2/+2 and gain trample until end of turn.

When Ovinomancer enters, sacrifice it unless you return three basic lands you control to their owner's hand.

, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

Return any number of target nonland, nontoken permanents you control to their owners' hands. Draw a card for each card returned to your hand this way.

Discard a card: Regenerate Patchwork Gnomes. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

This spell costs less to cast if you control an Otter.

Draw two cards.

Defender

When Phantasmal Abomination becomes the target of a spell or ability, sacrifice it.

When Phantom Blade enters, attach it to up to one target creature you control. Destroy up to one other target creature.

Equipped creature gets +1/+1 and has menace. (It can't be blocked except by two or more creatures.)

Equip

Protection from black

Phantom Centaur enters with three +1/+1 counters on it.

If damage would be dealt to Phantom Centaur, prevent that damage. Remove a +1/+1 counter from Phantom Centaur.

Creature tokens you control get +1/+1.