12012 cards found
Opportunistic Dragon

Opportunistic Dragon {2}{R}{R}

Creature - Dragon
Flying
When Opportunistic Dragon enters the battlefield, choose target Human or artifact an opponent controls. For as long as Opportunistic Dragon remains on the battlefield, gain control of that permanent, it loses all abilities, and it can't attack or block.
4/3
Opposition

Opposition {2}{U}{U}

Enchantment
Tap an untapped creature you control: Tap target artifact, creature, or land.
Exhausting a wizard can be exhausting work.
Opposition Agent

Opposition Agent {2}{B}

Creature - Human Rogue
Flash
You control your opponents while they're searching their libraries.
While an opponent is searching their library, they exile each card they find. You may play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any color to cast them.
3/2
Oppression

Oppression {1}{B}{B}

Enchantment
Whenever a player casts a spell, that player discards a card.
THE EARTH BELOW IS YOUR CELL
THE AIR YOU BREATHE FORMS YOUR CHAINS
THE ONLY PATH TO FREEDOM LIES IN SUBMISSION
Opt

Opt {U}

Instant
Scry 1.
Draw a card.
The choice isn't whether to eat, but when to stop.
Related card: Tome of Gadwick
Optimus Prime, Autobot Leader
Optimus Prime, Hero

Optimus Prime, Autobot Leader

Legendary Artifact - Vehicle
(Color indicator: Optimus Prime, Autobot Leader is white, blue, and red)
Living metal
Trample
Whenever you attack, bolster 2. The chosen creature gains trample until end of turn. When that creature deals combat damage to a player this turn, convert Optimus Prime.
6/8
Card has other part: Optimus Prime, Hero
  • Transformers 13b 27b
Optimus Prime, Hero
Optimus Prime, Autobot Leader

Optimus Prime, Hero {3}{U}{R}{W}

Legendary Artifact Creature - Robot
More Than Meets the Eye {2}{U}{R}{W}
At the beginning of each end step, bolster 1.
When Optimus Prime dies, return it to the battlefield converted under its owner's control.
4/8
Card has other part: Optimus Prime, Autobot Leader
  • Transformers 13a 27a
Optimus Prime, Inspiring Leader

Optimus Prime, Inspiring Leader {3}{R}{W}

Legendary Artifact Creature - Autobot
{1}: Turn target permanent you control to its other face.
{1}: Until end of turn, Optimus Prime, Inspiring Leader becomes a Construct with base power and toughness 6/6 and creatures you control gain trample.
"Roll out!"
4/5
  • 2018 Heroes of the Realm
Oracle

Oracle

Vanguard
{0}: Untap target attacking creature you control and remove it from combat.
Known simply by her title, Oracle uses her gift of prophecy to aid her people. She believes Gerrard to be the Korvecdal, the one who will unite the people of Rath against Volrath's tyranny. Her only doubt is whether she will be strong enough to guide him to his destiny.
Hand size bonus: +1
Life bonus: +9
  • Vanguard Series
Oracle en-Vec

Oracle en-Vec {1}{W}

Creature - Human Wizard
{T}: Target opponent chooses any number of creatures they control. During that player's next turn, the chosen creatures attack if able, and other creatures can't attack. At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack this turn. Activate only during your turn.
1/1
  • Tempest
Oracle of Bones

Oracle of Bones {2}{R}{R}

Creature - Minotaur Shaman
Haste
Tribute 2
When Oracle of Bones enters the battlefield, if tribute wasn't paid, you may cast an instant or sorcery spell from your hand without paying its mana cost.
3/1
  • Born of the Gods
Oracle of Mul Daya

Oracle of Mul Daya {3}{G}

Creature - Elf Shaman
You may play an additional land on each of your turns.
Play with the top card of your library revealed.
You may play lands from the top of your library.
2/2
Oracle of Nectars

Oracle of Nectars {2}{G/W}

Creature - Elf Cleric
{X}, {T}: You gain X life.
When elves find a fount of beauty, they protect it. Where there is beauty, there is hope.
2/2
Oracle of the Alpha

Oracle of the Alpha {2}{U}

Creature - Bird Wizard
Flying
When Oracle of the Alpha enters the battlefield, conjure the Power Nine into your library, then shuffle.
Whenever Oracle of the Alpha attacks, scry 1.
2/3
Related cards: Ancestral Recall Black Lotus Mox Emerald Mox Jet Mox Pearl Mox Ruby Mox Sapphire Time Walk Timetwister
  • Alchemy: Dominaria
Oracle's Attendants

Oracle's Attendants {3}{W}

Creature - Human Soldier
{T}: All damage that would be dealt to target creature this turn by a source of your choice is dealt to Oracle's Attendants instead.
They follow the prophecy to each new prophet, guarding the future from the present.
1/5
Oracle's Vault

Oracle's Vault {4}

Artifact
{2}, {T}: Exile the top card of your library. Until end of turn, you may play that card. Put a brick counter on Oracle's Vault.
{T}: Exile the top card of your library. Until end of turn, you may play that card without paying its mana cost. Activate only if there are three or more brick counters on Oracle's Vault.
Orah, Skyclave Hierophant

Orah, Skyclave Hierophant {2}{W}{B}

Legendary Creature - Kor Cleric
Lifelink
Whenever Orah, Skyclave Hierophant or another Cleric you control dies, return target Cleric card with lesser mana value from your graveyard to the battlefield.
"The Skyclaves are our inheritance."
3/3
Oran-Rief Hydra

Oran-Rief Hydra {4}{G}{G}

Creature - Hydra
Trample
Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on Oran-Rief Hydra. If that land is a Forest, put two +1/+1 counters on Oran-Rief Hydra instead.
5/5
Oran-Rief Ooze

Oran-Rief Ooze {2}{G}

Creature - Ooze
When Oran-Rief Ooze enters the battlefield, put a +1/+1 counter on target creature you control.
Whenever Oran-Rief Ooze attacks, put a +1/+1 counter on each attacking creature with a +1/+1 counter on it.
2/2
Related card: Oran-Rief Ooze (Alchemy)
Oran-Rief Ooze (Alchemy)

Oran-Rief Ooze (Alchemy) {2}{G}

Creature - Ooze
When Oran-Rief Ooze enters the battlefield, put a +1/+1 counter on target creature you control.
Whenever Oran-Rief Ooze attacks, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.
2/2
Related card: Oran-Rief Ooze
  • Zendikar Rising
Oran-Rief, the Vastwood

Oran-Rief, the Vastwood

Land
Oran-Rief, the Vastwood enters the battlefield tapped.
{T}: Add {G}.
{T}: Put a +1/+1 counter on each green creature that entered the battlefield this turn.
Orator of Ojutai

Orator of Ojutai {1}{W}

Creature - Bird Monk
As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
Defender, flying
When Orator of Ojutai enters the battlefield, if you revealed a Dragon card or controlled a Dragon as you cast this spell, draw a card.
0/4
Orb of Dragonkind

Orb of Dragonkind {1}{R}

Artifact
{1}, {T}: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons.
{R}, {T}, Sacrifice Orb of Dragonkind: Look at the top seven cards of your library. You may reveal a Dragon card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
Orb of Dreams

Orb of Dreams {3}

Artifact
Permanents enter the battlefield tapped.
"Behind the eyelids, a flickering flame. Beneath the dream, a flickering sorrow. Can peace find you in this sleep When all the world is tossed by war?"
—Snow-Fur, kitsune poet
  • Betrayers of Kamigawa
Orbs of Warding

Orbs of Warding {5}

Artifact
You have hexproof.
If a creature would deal damage to you, prevent 1 of that damage.
One orb to guard the body, one to protect the mind, and one to shield the soul.
  • Magic Origins