1240 cards found
Omen of Deception

Omen of Deception {1}{U}

Enchantment
Flash
When Omen of Deception enters, counter target spell unless its controller pays {2}.
{2}{U}, Sacrifice Omen of Deception: Scry 2.
“My time will come, when even every follower is suspicious of their feigned devotion.”
  • Theros: Age of Trax
Omen of Horizons

Omen of Horizons {1}{G}

Enchantment
Flash
When Omen of Horizons enters, put two +1/+1 counters on target creature you control.
{2}{G}, Sacrifice Omen of Horizons: Scry 2.
“My time will come, when there is no border between knowledge and the unknowable.”
  • Theros: Age of Trax
Omen of Slaughter

Omen of Slaughter {1}{B}

Enchantment
Flash
When Omen of Slaughter enters, each opponent sacrifices a creature or planeswalker.
{2}{B}, Sacrifice Omen of Slaughter: Scry 2.
“My time will come, when every mortal has proven themselves in the blood of their enemies.”
Omen of Storms

Omen of Storms {1}{R}

Enchantment
Flash
When Omen of Storms enters, discard a card, then draw two cards.
{2}{R}, Sacrifice Omen of Storms: Scry 2.
“My time will come, when every mind is filled to the brim with knowledge.”
  • Theros: Age of Trax
Omen of Victory

Omen of Victory {1}{W}

Enchantment
Flash
When Omen of Victory enters, create a 0/0 white Army creature token, then put two +1/+1 counters on it.
{2}{W}, Sacrifice Omen of Victory: Scry 2.
“My time will come, when every soldier has tasted fighting for their truest desires.”
  • Theros: Age of Trax
Ominous Seas

Ominous Seas {1}{U}

Enchantment
Whenever you draw a card, put a foreshadow counter on this enchantment.
Remove eight foreshadow counters from this enchantment: Create an 8/8 blue Kraken creature token.
Cycling {2}
  • Kitsuo: Dusk of Time
Ominous Wind

Ominous Wind {1}{B}

Instant
Target creature gets -2/-2 until end of turn.
{3}{B}{B}, Exile Ominous Wind from your graveyard: Each creature gets -2/-2 until end of turn. Activate only as a sorcery.
Karina set up the camp. Amber worked on a fire. Luna wandered off to investigate that strange sound in the trees.
  • Monsters of Chikyu
On Borrowed Time

On Borrowed Time {R}{R}

Sorcery
Take an extra turn after this one. Exile On Borrowed Time and all but the bottom card of your library.
With the hit out on her family, Josephine had only one night to find out what happened to her wife.
  • Secrets of the River City
On the Hunt

On the Hunt {1}{G}

Sorcery
Put a vigilance counter on target creature you control. That creature deals damage equal to its power to up to one target creature you don't control.
“We might lack the flourish of the royal guard, but an arrow to the heart kills just the same.”
—Ollitie, Resourceful Tracker
  • Duelists of Vereaux
Ond-Fen Channeler

Ond-Fen Channeler {1}{B}

Creature - Human Warlock
Lifelink
Whenever an enchantment you control enters, each opponent loses 1 life and you gain 1 life.
2/2
  • Svergard
One for All

One for All {1}{W}

Enchantment - Aura
Enchant creature you control
At the beginning of each combat, other creatures you control gain first strike until end of turn if enchanted creature has first strike. The same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, trample, vigilance, and ward.
  • Duelists of Vereaux
One on One

One on One {1}{W}

Enchantment
Vanguard — Whenever a creature you control attacks alone, put a +1/+1 counter on it.
In a duel between Chikyu's trainers, honor demands that each side use only a single monster at a time.
  • Monsters of Chikyu
Oni of Tongues

Oni of Tongues {1}{B/R}

Creature - Demon
Damned — When this creature enters, if you've sacrificed a permanent this turn, create a Treasure token.
“I will grant you such great boons, mortal. All I ask for in return is everything.”
2/2
  • Kitsuo: Dusk of Time
Opal Ornamentation

Opal Ornamentation {1}{W}

Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 and has lifelink.
{4}{B}: Return Opal Ornamentation from the graveyard attached to target creature you control. Activate only as a sorcery.
  • Karsus
Orc Sentry

Orc Sentry {1}{R}

Creature - Orc Warrior
Defender
“Brutish and dull, but they make perfect watchmen. Any foe will surely retreat far before reaching the gates, for fear of having to see the orc's face up close.”
—His Holiness Jorah
3/3
  • Ghariv: the Quaking City
Orcish Bloodhunter

Orcish Bloodhunter {1}{R}

Creature - Orc Warrior
First strike
At the beginning of your upkeep, Orcish Bloodhunter deals 1 damage to each player.
At the beginning of your end step, if an opponent lost life three or more times this turn, put a +1/+1 counter on Orcish Bloodhunter.
1/1
  • Ghariv: the Quaking City
Ordeal of Karametra

Ordeal of Karametra {1}{G}

Enchantment - Aura
Enchant creature
Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Karametra.
Whenever you sacrifice Ordeal of Karametra, put a +1/+1 counter on each creature you control. Untap them.
  • Theros: Age of Trax
Ordeal of Karda

Ordeal of Karda {1}{R}

Enchantment - Aura
Enchant creature
Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Karda.
Whenever you sacrifice Ordeal of Karda, creatures you control get +2/+0 until end of turn.
  • Theros: Age of Trax
Organized Espionage

Organized Espionage {1}{B}

Enchantment
Black creatures you control get +1/+1.
Whenever a creature you control deals combat damage to a player, you may sacrifice it and pay 3 life. If you do, that player discards a card and you draw a card.
  • Viridian's Last Mission
Out of Sight

Out of Sight {1}{U}

Instant
Target creature you control gains hexproof until end of turn. When a nonmana ability of that creature is next activated or triggered this turn, copy it. You may choose new targets for the copy.
“One minute it was there, the next, it was gone! And so was my sandwich...”
—Noriyuki, bug catcher
  • Chikyu: Chaos Rains
Outdated Crony

Outdated Crony {1}{B}

Artifact Creature - Minion
Whenever another artifact you control enters, you may sacrifice Outdated Crony. If you do, draw two cards.
One villain's trash is probably trash to every other villain as well.
2/1
  • Viridian's Last Mission
Outlands Farmer

Outlands Farmer {1}{G}

Creature - Mutant Farmer
{T}: Add {G}.
“Multiple reports of strange noises from a Verdant Valley residence were dropped when inspectors failed to find anything unusual.”
—River Cities Gazette, June 4th
2/1
  • Secrets of the River City
Overbearing Researcher

Overbearing Researcher {1}{W}

Creature - Human Artificer
When Overbearing Researcher enters, put a +1/+1 counter on target creature.
Each creature you control has ward {X}, where X is the number of counters on that creature.
“Hands off! That specimen is worth more than you make in a year!”
1/1
  • Cliques of Nylin
Overheat

Overheat {X}{R}{R}

Sorcery
Harness
Overheat deals X damage to any target.
  • Monsters of Chikyu
Overrule Orders

Overrule Orders {U}{U}

Instant
Counter target permanent spell. If that spell is countered this way, put it into its owner's library third from the top instead of into that player's graveyard.
  • Karslav