3627 cards found
Nyssa of Traken

Nyssa of Traken {3}{U}

Legendary Creature - Human Scientist
You have no maximum hand size.
Sonic Booster — Whenever Nyssa of Traken attacks, sacrifice X artifacts. When you sacrifice one or more artifacts this way, tap up to X target creatures and you draw X cards.
Doctor's companion
3/4
Nyx

Nyx

Plane - Theros
Nontoken creatures are enchantments in addition to their other types.
Constellation — Whenever an enchantment enters the battlefield under your control, you gain 1 life.
Whenever chaos ensues, choose a color. Add an amount of mana of that color equal to your devotion to that color.
  • March of the Machine Commander
Oaken Power Suit

Oaken Power Suit

Artifact - Contraption
Whenever you crank Oaken Power Suit, target creature gets +X/+X until end of turn, where X is the greatest power among creatures you control.
  • Unstable
Oath of Lim-Dûl

Oath of Lim-Dûl {3}{B}

Enchantment
Whenever you lose life, for each 1 life you lost, sacrifice a permanent other than Oath of Lim-Dûl unless you discard a card.
{B}{B}: Draw a card.
  • Ice Age
Obscura Confluence

Obscura Confluence {1}{W}{U}{B}

Instant
Choose three. You may choose the same mode more than once.
• Until end of turn, target creature loses all abilities and has base power and toughness 1/1.
• Target creature connives.
• Target player returns a creature card from their graveyard to their hand.
Obscura Polymorphist

Obscura Polymorphist {1}{W}{U}

Creature - Cephalid Wizard
When Obscura Polymorphist enters the battlefield, exile up to one target creature. Its controller seeks a creature card.
2/2
  • Alchemy: New Capenna
Obsessive Collector

Obsessive Collector {3}{U}

Creature - Spirit
Flying
Ward {2}
Whenever Obsessive Collector deals combat damage to a player, seek a card with mana value equal to the number of cards in your hand.
4/4
  • Alchemy: Innistrad
Obsidian Giant

Obsidian Giant {4}{R}

Creature - Giant
After a while, ships stopped sailing within his reach.
4/4
  • Portal Second Age
Occult Epiphany

Occult Epiphany {X}{U}

Instant
Draw X cards, then discard X cards. Create a 1/1 white Spirit creature token with flying for each card type among cards discarded this way.
In a single unending moment, a hundred lifetimes of knowledge coursed through his unraveling mind.
  • Crimson Vow Commander 14 52
Oceanus Dragon

Oceanus Dragon {4}{U}{U}

Creature - Dragon
Flying
When Oceanus Dragon enters the battlefield, tap target creature an opponent controls. Goad it.
3/5
  • Commander Legends: Battle for Baldur's Gate
Ochre Jelly (Alchemy)

Ochre Jelly (Alchemy) {X}{G}

Creature - Ooze
Trample
Ward {2}
Ochre Jelly enters the battlefield with X +1/+1 counters on it.
Split — When Ochre Jelly dies, if it had two or more +1/+1 counters on it, create a token that's a copy of it at the beginning of the next end step. The token enters the battlefield with half that many +1/+1 counters on it, rounded down.
0/0
Related card: Ochre Jelly
  • Adventures in the Forgotten Realms
Octo Opus

Octo Opus {3}{U}{U}

Enchantment
When Octo Opus enters the battlefield, create a 4/4 blue Octopus Performer creature token named Contortionist with "At the beginning of your upkeep, you may fold this token in half." (It becomes 2/2, then 1/1, ½/½, and so on.)
Sacrifice Octo Opus: Draw a card and an additional card for each of Contortionist's folds.
  • Unfinity 54 340
Oddly Uneven

Oddly Uneven {3}{W}{W}

Sorcery
Choose one —
• Destroy each creature with an odd number of words in its name. (Hyphenated words are one word.)
• Destroy each creature with an even number of words in its name.
The odds are good, but the goods are odd.
Oglor, Devoted Assistant

Oglor, Devoted Assistant {1}{U}

Legendary Creature - Homunculus
At the beginning of your upkeep, look at the top two cards of your library, then put one of them into your graveyard.
Whenever a creature card is put into your graveyard from your library or hand, it perpetually gains "When this card leaves your graveyard, create a tapped 2/2 black Zombie creature token."
1/1
  • Alchemy: Innistrad
Ogre Arsonist

Ogre Arsonist {4}{R}

Creature - Ogre
When Ogre Arsonist enters the battlefield, destroy target land.
"All of Ravnica's looking for you, Dack, from the Wojek on down."
—Maytov
3/3
Ogre Battlecaster

Ogre Battlecaster {2}{R}

Creature - Ogre Shaman
First strike
Whenever Ogre Battlecaster attacks, you may cast target instant or sorcery card from your graveyard by paying {R}{R} in addition to its other costs. If that spell would be put into a graveyard, exile it instead. When you cast that spell, Ogre Battlecaster gets +X/+0 until end of turn, where X is that spell's mana value.
3/3
  • Jumpstart 2022
Ogre Berserker

Ogre Berserker {4}{R}

Creature - Ogre Berserker
Haste
The machine does the growling, so the ogre's free to smile.
4/2
  • Portal Second Age
Ogre Warrior

Ogre Warrior {3}{R}

Creature - Ogre Warrior
Assault and battery included.
3/3
Ol' Buzzbark

Ol' Buzzbark {X}{R}{G}

Legendary Creature - Goblin Warrior
When Ol' Buzzbark enters the battlefield, roll X six-sided dice onto the battlefield from a height of at least X inches. For each die, put a number of +1/+1 counters equal to the result on each creature you control that die is touching. For each die, Ol' Buzzbark deals damage equal to the result to each creature an opponent controls that die is touching.
3/3
Old Fogey

Old Fogey {G}{G}

Summon - Dinosaur
Phasing, cumulative upkeep {1}, echo {G}{G}, fading 3, bands with other Dinosaurs, protection from Homarids, snow-covered plainswalk, flanking, rampage 2
"These kids today with their collector numbers and their newfangled tap symbol. Twenty Black Lotuses and twenty Plague Rats. Now that's real Magic."
7/7
Old Guard

Old Guard {1}{W}

Artifact Creature - Cyborg Soldier
{W}, {T}: Tap target creature without reminder text. (Reminder text is still any italicized text in parentheses that explains rules you already know.)
"You say you're capable of flying. You got any proof of that?"
2/1
Old-Fashioned Vampire

Old-Fashioned Vampire {3}{B}{B}

Creature - Vampyre
Flying
Old-Fashioned Vampire gets +2/+2 and has deathtouch as long as it's dark outdoors.
"Stalking hard or hardly stalking, am I right?"
3/3
  • Unstable
Omen

Omen {1}{U}

Sorcery
Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.
  • Portal
Omen of Fire

Omen of Fire {3}{R}{R}

Instant
Return all Islands to their owners' hands. Each player sacrifices a Plains or a white permanent for each white permanent they control.
"Let Balduvia burn to warm Kjeldor's hearth!"
—General Varchild
  • Alliances
Ominous Cemetery

Ominous Cemetery

Land
{T}: Add {C}.
{5}, {T}, Exile Ominous Cemetery: Target creature's owner shuffles it into their library.
"They are fast. Faster than you can believe. Don't turn your back, don't look away, and don't blink."
—The Tenth Doctor
  • Doctor Who 189 794