1590 cards found
Nyx Weaver

Nyx Weaver {1}{B}{G}

Enchantment Creature - Spider
Reach
At the beginning of your upkeep, mill two cards.
{1}{B}{G}, Exile Nyx Weaver: Return target card from your graveyard to your hand.
2/3
Oath of Eorl

Oath of Eorl {3}{R}{W}

Enchantment - Saga
I — Create two 1/1 white Human Soldier creature tokens.
II — Create two 2/2 red Human Knight creature tokens with trample and haste.
III — Put an indestructible counter on up to one target Human. You become the monarch.
  • Tales of Middle-earth Commander 64 471
Oath of Kaya

Oath of Kaya {1}{W}{B}

Legendary Enchantment
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.
"So everyone gets what they truly deserve, I will keep watch."
  • War of the Spark
  • War of the Spark Promos 209p 209s
Obelisk Spider

Obelisk Spider {1}{B}{G}

Creature - Spider
Reach
Whenever Obelisk Spider deals combat damage to a creature, put a -1/-1 counter on that creature.
Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life.
1/4
Oblivious Bookworm

Oblivious Bookworm {G}{U}

Creature - Human Wizard
At the beginning of your end step, you may draw a card. If you do, discard a card unless a permanent entered the battlefield face down under your control this turn or you turned a permanent face up this turn.
"Huh, the detector won't stop beeping. Must be on the fritz again."
2/3
  • Duskmourn: House of Horror 225 300
Obstinate Gargoyle

Obstinate Gargoyle {1}{W}{B}

Artifact Creature - Gargoyle
Obstinate Gargoyle has flying as long as it's modified.
Persist
2/2
  • Modern Horizons 3
Obzedat's Aid

Obzedat's Aid {3}{W}{B}

Sorcery
Return target permanent card from your graveyard to the battlefield.
"The Obzedat have revived you with purpose. Don't squander their blessing."
—Teysa Karlov, Grand Envoy of Orzhov
  • Dragon's Maze
Obzedat, Ghost Council

Obzedat, Ghost Council {1}{W}{W}{B}{B}

Legendary Creature - Spirit Advisor
When Obzedat, Ghost Council enters, target opponent loses 2 life and you gain 2 life.
At the beginning of your end step, you may exile Obzedat. If you do, return it to the battlefield under its owner's control at the beginning of your next upkeep. It gains haste.
5/5
Ochran Assassin

Ochran Assassin {1}{B}{G}

Creature - Elf Assassin
Deathtouch
All creatures able to block Ochran Assassin do so.
"The dagger is just the distraction. I carry the real killer in a vial at my side."
1/1
Octomancer

Octomancer {3}{G}{U}

Creature - Frog Druid
Gift an Octopus
At the beginning of each end step, create a token that's a copy of target creature token that entered the battlefield this turn.
3/3
  • Bloomburrow Commander 37 69
Odds

Odds {U}{R}

Instant
Flip a coin. If it comes up heads, counter target instant or sorcery spell. If it comes up tails, copy that spell and you may choose new targets for the copy.
Card has other part: Ends
Odious Trow

Odious Trow {B/G}

Creature - Troll
{1}{B/G}: Regenerate Odious Trow.
Trows are the vile trolls that lurk in the bogs of Shadowmoor. They reappear each night to frighten the living and gnaw the dead.
1/1
  • Eventide
Odric, Blood-Cursed

Odric, Blood-Cursed {1}{R}{W}

Legendary Creature - Vampire Soldier
When Odric, Blood-Cursed enters, create X Blood tokens, where X is the number of abilities from among flying, first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance found among creatures you control.
3/3
Oggyar Battle-Seer

Oggyar Battle-Seer {3}{U}{R}

Creature - Ogre Shaman
Haste
{T}: Scry 1.
"May Ganathog bless us with bloody visions of glory restored!"
3/4
  • Strixhaven: School of Mages
Oko's Hospitality

Oko's Hospitality {3}{G}{U}

Instant
Creatures you control have base power and toughness 3/3 until end of turn. You may search your library and/or graveyard for a card named Oko, the Trickster, reveal it, and put it into your hand. If you search your library this way, shuffle.
"My advisors recommend I let them eat you."
—Oko
Related card: Oko, the Trickster
  • Throne of Eldraine
Oko, Thief of Crowns

Oko, Thief of Crowns {1}{G}{U}

Legendary Planeswalker - Oko
[+2]: Create a Food token.
[+1]: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3.
[–5]: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.
Loyalty:
4
Oko, the Ringleader

Oko, the Ringleader {2}{G}{U}

Legendary Planeswalker - Oko
At the beginning of combat on your turn, Oko, the Ringleader becomes a copy of up to one target creature you control until end of turn, except he has hexproof.
[+1]: Draw two cards. If you've committed a crime this turn, discard a card. Otherwise, discard two cards.
[–1]: Create a 3/3 green Elk creature token.
[–5]: For each other nonland permanent you control, create a token that's a copy of that permanent.
Loyalty:
3
  • Outlaws of Thunder Junction Promos 223p 223s
  • Outlaws of Thunder Junction 223 296 305
Oko, the Trickster

Oko, the Trickster {4}{G}{U}

Legendary Planeswalker - Oko
[+1]: Put two +1/+1 counters on up to one target creature you control.
[0]: Until end of turn, Oko, the Trickster becomes a copy of target creature you control. Prevent all damage that would be dealt to him this turn.
[–7]: Until end of turn, each creature you control has base power and toughness 10/10 and gains trample.
Loyalty:
4
Related card: Oko's Hospitality
Old Man Willow

Old Man Willow {2}{B}{G}

Legendary Creature - Treefolk
Old Man Willow's power and toughness are each equal to the number of lands you control.
Whenever Old Man Willow attacks, you may sacrifice another creature or a token. When you do, target creature an opponent controls gets -2/-2 until end of turn.
*/*
  • The Lord of the Rings: Tales of Middle-earth 217 668
Old Rutstein

Old Rutstein {1}{B}{G}

Legendary Creature - Human Peasant
When Old Rutstein enters and at the beginning of your upkeep, mill a card. If a land card is milled this way, create a Treasure token. If a creature card is milled this way, create a 1/1 green Insect creature token. If a noncreature, nonland card is milled this way, create a Blood token.
1/4
Old Stickfingers

Old Stickfingers {X}{B}{G}

Legendary Creature - Horror
When you cast this spell, reveal cards from the top of your library until you reveal X creature cards. Put all creature cards revealed this way into your graveyard, then put the rest on the bottom of your library in a random order.
Old Stickfingers's power and toughness are each equal to the number of creature cards in your graveyard.
*/*
Olórin's Searing Light

Olórin's Searing Light {2}{R}{W}

Instant
Each opponent exiles a creature with the greatest power among creatures that player controls.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, Olórin's Searing Light deals damage to each opponent equal to the power of the creature they exiled.
  • Tales of Middle-earth Commander 503 547
Omnibian

Omnibian {1}{G}{G}{U}

Creature - Frog
{T}: Target creature becomes a Frog with base power and toughness 3/3 until end of turn.
"This creature has hyperevolved chameleonic abilities. It no longer mimics its surroundings, instead forcing them to take on its form."
—Simic research notes
3/3
Omo, Queen of Vesuva

Omo, Queen of Vesuva {2}{G/U}

Legendary Creature - Shapeshifter Noble
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.
1/5
Ondu Knotmaster

Ondu Knotmaster {2}{W}{B}

Creature - Kor Rogue
Lifelink
Whenever another modified creature you control dies, put two +1/+1 counters on Ondu Knotmaster.
2/2
Card has other part: Throw a Line
  • Modern Horizons 3