2638 cards found
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
Oracle of Edicts

Oracle of Edicts {1}{U}

Creature - Human Wizard
When Oracle of Edicts enters, adjudicate. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)
Whenever an Aura you control enters, scry 1.
1/3
Oracle's Disciple

Oracle's Disciple {U/R}{U/R}

Creature - Human Wizard Knight
Whenever you cast a noncreature spell, creatures you control get +1/+1 until end of turn.
“Symmetry precludes mystery. Only where it is broken by imbalance can we find something to puzzle over.”
2/2
Oracle's Vision

Oracle's Vision {U/B}

Sorcery
Each player mills three cards.
Draw a card.
You shall go west, and face the god who has turned,
You shall find what was stolen, and see it safely returned,
You shall be betrayed by one who calls you a friend,
And you shall fail to save what matters most, in the end.
Order Module

Order Module {2}{W}{W}

Enchantment - Module
(Activate each submodule once as a sorcery. When this enters, activate one submodule for free.)
{W}{W}{W}: Purpose
Create three 1/1 white Spirit creature tokens with flying.
{W}{W}{W}: Justice
Exile target nonland permanent you don't control until Order Module leaves the battlefield.
{W}{W}{W}: Unity
Order Module gains “Creatures you control get +1/+1.”
Orichi of the Cold Mist

Orichi of the Cold Mist {1}{U}

Legendary Creature - Drake
Flash (You may cast this spell any time you could cast an instant.)
Flying
When Orichi of the Cold Mist enters, exile another target creature you control. Return that card to the battlefield under its owner's control at the beginning of the next end step.
2/1
Oriq Soulweaver

Oriq Soulweaver {B}{B}{B}

Creature - Human Warlock
Whenever you cast a black spell, choose up to X, where X is the number of black mana symbols in that spell's mana cost —
• Target player loses 1 life and you gain 1 life.
• Put a -1/-1 counter on target creature.
• You draw a card and you lose 3 life.
• Exile target card in a graveyard.
3/3
Orlesia, First of the Sen

Orlesia, First of the Sen {W}{U}{B}

Legendary Artifact Creature - Wizard
Your opponents play with the top card of their library revealed.
Your opponents can't cast spells during your turn.
You may play lands and cast spells from the top of an opponent's library during your turn.
1/3