2646 cards found
Olten Surveyor

Olten Surveyor {1}{G}

Creature - Human Scout
When Olten Surveyor enters, choose any number. Each opponent creates a 1/1 colorless Servo artifact creature token for each mode chosen.
• Destroy target artifact or enchantment with mana value 3 or less.
• Shuffle up to four cards from target player's graveyard into their library.
• You gain 4 life.
1/3
Olten Tarrasque

Olten Tarrasque {5}{G}{G}

Creature - Dinosaur
Trample
Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)
Cycling {2} ({2}, Discard this card: Draw a card.)
History shows again and again how nature points out the folly of men.
6/8
Ominous Discovery

Ominous Discovery {1}{U}

Sorcery
Look at the top two cards of your library. Put one of them into your hand and the rest into your graveyard.
Rerun (If you cast this from your hand, exile it as it resolves. Whenever a creature you control dies, you may cast this card from exile without paying its mana cost.)
Ominous Dragoncaller

Ominous Dragoncaller {1}{R}{R}

Creature - Human Shaman
Ominous Dragoncaller gets +1/+1 and has flying as long as you control a Dragon.
3/2
Card has other part: Call of the Dragon
Ominous Hart

Ominous Hart {7}{B}{B}

Creature - Elk Horror
This spell costs {1} less to cast for each card in your graveyard.
Menace
“Every now and then I get a little bit restless, and dream of something wild.”
—Mia Reyes, Xenobiologist
4/3
Once Abandoned

Once Abandoned {1}{G}{G}

Instant
This spell costs {G} less to cast if it targets a blue or black permanent.
Destroy target artifact, enchantment, or planeswalker.
Once Betrayed

Once Betrayed {2}{B}{B}

Instant
This spell costs {1}{B} less to cast if it targets a green or white permanent.
Destroy target creature or planeswalker.
“I had a crush... until you started talking to the gun.”
Once Denied

Once Denied {2}{U}{U}{U}

Instant
This spell costs {1}{U} less to cast if it targets a red or green spell.
Counter target spell.
Draw a card.
“This is not what the future of Piltover looks like, dear boys!”
Once More with Heart

Once More with Heart {W}

Sorcery
Return target creature card with mana value 3 or less from your graveyard to the battlefield. If its mana value is less than 3, you gain life equal to the difference.
“No law or force in this dreadful world — not even death — could ever make me let you go.”
Once Scarred

Once Scarred {R}{R}

Instant
This spell costs {R} less to cast if it targets a white or blue permanent.
Once Scarred deals 4 damage to target creature or planeswalker.
“We shared a vision, Vander. A dream of freedom. Do you even remember?”
Once Shunned

Once Shunned {1}{W}{W}

Instant
This spell costs {W} less to cast if it targets a black or red permanent.
Exile target nonland permanent with mana value 3 or less.
“Topside and bottom. Oil and water. That's all there is.”
One

One {3}{B}{B}

Sorcery
For each player, choose a creature or planeswalker that player controls. Each player sacrifices all creatures and planeswalkers they control not chosen this way.
Fuse (You may cast one or both halves of this card from your hand.)
Card has other part: Done
One Bad Night

One Bad Night {1}{B}

Instant
Destroy target monocolored creature.
Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, return that card to the battlefield under your control.
One with the World

One with the World {G}

Sorcery
Search your library for a basic land card, reveal it, put it into your hand, then shuffle. Scry 2.
Ontarachie Vagabond

Ontarachie Vagabond {1}{W}

Creature - Fungus Scout
If you would germinate, instead create a 1/1 green Saproling creature token, then put a +1/+1 counter on a creature you control.
{2}{W}{W}: Germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
2/2
Onya's Study

Onya's Study {R}{W}{B}

Enchantment - Study
Archive 6 (As this enters, shuffle the top six cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever a creature or planeswalker you control dies, you may play a card from the archived library. (You still pay its costs.)
Onyx Ritualist

Onyx Ritualist {2}{B}

Creature - Human Cleric
Flying
Spells your opponents cast cost an additional 2 life to cast.
“Demand retribution with every word you say. Eventually, someone will have to pay.”
3/1
Oozing Yaoguai

Oozing Yaoguai {2}{B}{G}

Creature - Frog Spirit
When Oozing Yaoguai enters or a creature you control scavenges it, up to one target creature gets -3/-3 until end of turn and you gain 3 life.
Scavenge {3}{B}{G} ({3}{B}{G}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)
3/4
Open Road

Open Road {R}

Enchantment
Whenever Open Road or another permanent you control enters, if it has the greatest mana value among permanents you control, you may discard a card. If you do, draw a card.
Open the Secret Paths

Open the Secret Paths {2}{U}

Instant
Exile two target permanents you control, then return them to the battlefield under your control.
Ophan Titan

Ophan Titan {3}{G}

Creature - Angel
Ophan Titan gets +3/+3 as long as there are no nonland cards in your graveyard.
Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
“There, in the horizon. It's coming. Bring out the good ale and prepare the festival grounds. Today's the day we die.”
—Zehara, Bahumite village elder
3/3
  • MSEM Secret Lair Drops
  • Mious
Ophidian Oracle

Ophidian Oracle {3}{U}{R}

Creature - Human Shaman
When Ophidian Oracle enters, draw a card, then abound. (To abound, you may cast a spell that costs less than this from your hand without paying its mana cost.)
Recite {2}{G}{G} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)
4/4
  • Memorium Arcanum
  • MSEM Champions 82 82
Ophorion Refugee

Ophorion Refugee {G}

Creature - Elf Druid
{T}: Add {G}. If you control an attacking creature, add one mana of any color instead.
0/1
Oppress the Weak

Oppress the Weak {U}{B}

Instant
Target creature gets -4/-4 until end of turn.
Civilized — Draw a card if you control an artifact, a creature, and an enchantment.
“Until my dying breath,” he whispered, cradling the youngling to his breast.
Opt

Opt {U}

Instant
Scry 1.
Draw a card.
“I stole Death long ago, and search now for the dark path.”
—Ranni the Witch