Names starting with 'Op'


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Opal Acrolith
Color White
Type Enchantment
Cost Cost=2W
Expansion US(U)
Text(US+errata):Whenever an opponent plays a creature spell, if ~this~ is an enchantment, ~this~ becomes a 2/4 Guardian creature. ; {0}: ~this~ becomes an enchantment. [Oracle 1999/05/01]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
When it turns into an enchantment, it no longer counts as a creature. [Urza's Saga Rule Page]
Changes into a creature even if the spell is countered. [D'Angelo 1999/05/01]
It becomes a creature when the spell is announced, which is before that spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's FAQ 1998/10/05]
A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type Summon are also Creature spells.

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Opal Archangel
Color White
Type Enchantment
Cost Cost=4W
Expansion US(R)
Text(US+errata):When an opponent plays a creature spell, if ~this~ is an enchantment, ~this~ becomes a 5/5 Angel creature with flying. Attacking does not cause it to tap. [Oracle 1999/05/01]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
It changes even if the spell is countered. [D'Angelo 1999/05/01]
It becomes a creature when the spell is announced, which is before that spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's FAQ 1998/10/05]
A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type Summon are also Creature spells.

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Opal Avenger
Color White
Type Enchantment
Cost Cost=2W
Expansion UL(R)
Text(UL+errata):When you have 10 life or less, if ~this~ is an enchantment, ~this~ becomes a 3/5 Guardian creature. [Oracle 1999/05/01]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]

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Opal Caryatid
Color White
Type Enchantment
Cost Cost=W
Expansion US(C)
Text(US+errata):When an opponent plays a creature spell, if ~this~ is an enchantment, ~this~ becomes a 2/2 Soldier creature. [Oracle 1999/05/01]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
It changes even if the spell is countered. [D'Angelo 1999/05/01]
It becomes a creature when the spell is announced, which is before that spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's FAQ 1998/10/05]
A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type Summon are also Creature spells.

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Opal Champion
Color White
Type Enchantment
Cost Cost=2W
Expansion UL(C)
Text(UL+errata):When an opponent plays a creature spell, if ~this~ is an enchantment, ~this~ becomes a 3/3 Knight creature with first strike. [Oracle 1999/05/01]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
It changes into a creature even if the spell is countered. [D'Angelo 1999/05/01]
It becomes a creature when the spell is played (which is when it is announced), which is before the spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's Saga FAQ 1998/10/05]
A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type "Summon" are also Creatures.
Note -Also see First Strike, Rule A.18.

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Opalescence
Color White
Type Enchantment
Cost Cost=2WW
Expansion UD(R)
Text(UD):Each other global enchantment is a creature with power and toughness each equal to its converted mana cost. It's still an enchantment.
An enchantment that turns into a creature cannot attack unless it started your most recent turn in play, and you have controlled it continuously since that time. [Urza's Destiny FAQ 1999/05/25] See Rule G.37.3.
If one Opalescence and Humility are in play, then Opalescence turns Humility into a 4/4 creature, then Humility turns itself into a 1/1 creature with no abilities. Yes, this is counter-intuitive since Humility no longer has the ability to remove abilities, but this is the outcome. The timing rules for the interaction of continuous effects say you apply them in this order and you never loop back to see if that application would change things. [D'Angelo 1999/05/01] See Rule T.8.9 and Rule T.8.10. If new creatures or enchantments come into play, you apply Opalescence and Humility in order, so they come into play as 1/1 with no abilities. [D'Angelo 1999/07/27]
Does not animate itself. But can be animated by another Opalescence. [DeLaney 1999/06/08]

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Opal Gargoyle
Color White
Type Enchantment
Cost Cost=1W
Expansion US(C)
Text(US+errata):When an opponent plays a creature spell, if ~this~ is an enchantment, ~this~ becomes a 2/2 Gargoyle creature with flying. [Oracle 1999/05/01]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
It changes even if the spell is countered. [D'Angelo 1999/05/01]
It becomes a creature when the spell is announced, which is before that spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's FAQ 1998/10/05]
A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type Summon are also Creature spells.

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Opal Titan
Color White
Type Enchantment
Cost Cost=2WW
Expansion US(R)
Text(US+errata):When an opponent plays a creature spell, if ~this~ is an enchantment, ~this~ becomes a 4/4 Giant creature with protection from each of that spell's colors. [Oracle 1999/05/01]
If the spell was colorless (an artifact), this card does not get any form of Protection. [DeLaney 1998/10/05]
When it turns into a creature, it no longer counts as an enchantment. [Urza's Saga Rule Page]
It changes even if the spell is countered. [D'Angelo 1999/05/01]
It becomes a creature when the spell is announced, which is before that spell resolves. A Cloudchaser Eagle cannot be used to destroy this card, since it will no longer be an enchantment when the Eagle comes into play. [Urza's FAQ 1998/10/05]
A creature spell is any "Creature" or "Artifact Creature" spell. [D'Angelo 1999/05/01] Older cards of type Summon are also Creature spells.
Note -Also see Protection, Rule A.31.

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Ophidian
Color Blue
Type Creature - Snake
Cost Cost=2U
Expansion WL(C)
Text(WL+errata):1/3. ; Whenever ~this~ attacks and isn't blocked, you may draw a card. If you do, ~this~ deals no combat damage this turn. [Oracle 1999/07/30]
Note -Also see Is Not Blocked Ability, Rule E.7.

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Opportunist
Color Red
Type Creature - Soldier
Cost Cost=2R
Expansion TE(U)
Text(TE+errata):2/2. ; {Tap}: ~this~ deals 1 damage to target creature that was dealt damage this turn. [Oracle 1999/05/01]

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Opportunity
Color Blue
Type Instant
Cost Cost=4UU
Expansion UL(U)/BR(F1)/7(U)
Text(UL/7th):Target player draws four cards.

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Opposition
Color Blue
Type Enchantment
Cost Cost=2UU
Expansion UD(R)/7(R)
Text(UD/7th):Tap an untapped creature you control: Tap target artifact, creature, or land.
Can tap a creature which has summoning sickness. [D'Angelo 1999/09/04]

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Oppression
Color Black
Type Enchantment
Cost Cost=1BB
Expansion US(R)/7(R)
Text(7th):Whenever a player plays a spell, that player discards a card from his or her hand.
The ability does not do anything if the player no longer has any cards in hand after casting their spell. [Urza's FAQ 1998/10/05]

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Opt
Color Blue
Type Instant
Cost Cost=U
Expansion IN(C)
Text(IN):Look at the top card of your library. You may put that card on the bottom of your library. ; Draw a card.

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