Numbers and symbols: Difference between revisions
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{{Rules| | {{Rules| | ||
text = '''From the [[Comprehensive Rules]]''' | text = '''From the [[Comprehensive Rules]]''' (May 1, 2008) | ||
* '''104.''' Numbers and Symbols | * '''104.''' Numbers and Symbols | ||
**'''104.1.''' The Magic game uses only integers. | **'''104.1.''' The Magic game uses only integers. | ||
***'''104.1a''' You can’t choose a fractional number, deal fractional damage, gain fractional life, and so on. If a spell or ability could generate a fractional number, the spell or ability will tell you whether to round up or down. | ***'''104.1a''' You can’t choose a fractional number, deal fractional damage, gain fractional life, and so on. If a spell or ability could generate a fractional number, the spell or ability will tell you whether to round up or down. | ||
***'''104.1b''' Most of the time, the Magic game uses only positive numbers. You can’t choose a negative number, deal negative damage, gain negative life, and so on. However, it’s possible for a game value, such as a creature’s power, to be less than zero. If a calculation or comparison that would determine the result of an effect needs to use a negative value, it does so. If such a calculation yields a negative number, zero is used instead, unless that effect sets a | ***'''104.1b''' Most of the time, the Magic game uses only positive numbers. You can’t choose a negative number, deal negative damage, gain negative life, and so on. However, it’s possible for a game value, such as a creature’s power, to be less than zero. If a calculation or comparison that would determine the result of an effect needs to use a negative value, it does so. If such a calculation yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. | ||
***'''Example''':<br> If a 3/4 creature gets -5/-0, it’s a -2/4 creature. It deals no damage in combat. Its total power and toughness is 2. You’d have to give it +3/+0 to raise its power to 1. | ***'''Example''':<br> If a 3/4 creature gets -5/-0, it’s a -2/4 creature. It deals no damage in combat. Its total power and toughness is 2. You’d have to give it +3/+0 to raise its power to 1. | ||
***'''Example''':<br> <c>Viridian Joiner</c> is a 1/2 creature that says “{{T}}: Add an amount of | ***'''Example''':<br> <c>Viridian Joiner</c> is a 1/2 creature that says “{{T}}: Add an amount of {{g}} to your mana pool equal to Viridian Joiner’s power.” An effect gives it -2/-0, then its ability is activated. The ability adds no mana to your mana pool. | ||
**'''104.2''' If anything needs to use a number that can’t be determined, either as a result or in a calculation, it uses 0 instead. | **'''104.2''' If anything needs to use a number that can’t be determined, either as a result or in a calculation, it uses 0 instead. | ||
**'''104.3.''' The mana symbols are | **'''104.3.''' The mana symbols are {{w}}, {{u}}, {{b}}, {{r}}, {{g}}, and {{x}}; the numerals {{0}}, {{1}}, {{2}}, {{3}}, {{4}}, and so on; the hybrid symbols {{uw}}, {{wb}}, {{ub}}, {{ur}}, {{rb}}, {{gb}}, {{gr}}, {{rw}}, {{wg}}, and {{ug}}; the monocolored hybrid symbols {{2w}}, {{2u}}, {{2b}}, {{2r}}, and {{2g}}; and the snow symbol {{s}}. | ||
***'''104.3a''' Each of the colored mana symbols represents one colored mana: | ***'''104.3a''' Each of the colored mana symbols represents one colored mana: {{w}} is white, {{u}} blue, {{b}} black, {{r}} red, and {{g}} green. | ||
***'''104.3b''' Numeral symbols (such as | ***'''104.3b''' Numeral symbols (such as {{1}}) are generic mana costs and represent an amount of mana that can be paid with any color of, or colorless, mana. | ||
***'''104.3c''' The symbol | ***'''104.3c''' The symbol {{x}} represents an unspecified amount of mana; when playing a spell or activated ability with {{x}} in its cost, its controller decides the value of that variable. | ||
***'''104.3d''' Numeral symbols (such as | ***'''104.3d''' Numeral symbols (such as {{1}}) and variable symbols (such as {{x}}) can also represent colorless mana if they appear in the effect of a spell or ability that reads “add [mana symbol] to your mana pool” or something similar. | ||
***'''104.3e''' The symbol | ***'''104.3e''' The symbol {{0}} represents zero mana and is used as a placeholder when a spell or activated ability costs nothing to play. A spell or ability whose cost is {{0}} must still be played the same way as one with a cost greater than zero; it won’t play itself automatically. | ||
***'''104.3f''' Each of the hybrid mana symbols represents a cost that can be paid | ***'''104.3f''' Each of the hybrid mana symbols represents a cost that can be paid in one of two ways, as represented by the two halves of the hybrid mana symbol. A hybrid symbol such as {{wu}} be paid with either white or blue mana, and a monocolored hybrid symbol such as {{2b}} can be paid with either one black mana or two mana of any color of, or colorless, mana. A hybrid mana symbol is all of its component colors. | ||
***Example:<br> | ***Example:<br> {{gw}}{{gw}} can be paid by spending {{g}}{{g}}, {{g}}{{w}}, or {{w}}{{w}}. | ||
***'''104.3g''' If an effect would add | ***'''104.3g''' If an effect would add mana represented by a hybrid mana symbol to a player's mana pool, that player chooses one half of that symbol. If a colored half is chosen, one mana of that color is added to that player's mana pool. If a colorless half is chosen, an amount of colorless mana represented by that half's number is added to that player's mana pool. | ||
***'''104.3h''' The snow mana symbol | ***'''104.3h''' If a cost would be reduced by an amount of mana represented by a hybrid mana symbol, the player paying that cost chooses one half of that symbol at the time the cost reduction is applied (see rule 409.1f). If a colored half is chosen, the cost is reduced by one mana of that color (or, if the cost can't be reduced by one mana of that color, the cost is reduced by one generic mana). If a colorless half is chosen, the cost is reduced by an amount of generic mana equal to that half's number. | ||
***'''104.3i''' The snow mana symbol {{s}} represents a cost that can be paid with one mana produced by a snow permanent. This is a generic mana cost that can be paid with any color of, or colorless, mana. Effects that reduce the amount of generic mana you pay don’t affect {{s}} costs. | |||
**'''104.4.''' The tap symbol is {{T}}. The tap symbol in an activation cost means “Tap this permanent.” A permanent that’s already tapped can’t be tapped again to pay the cost. Creatures that haven’t been under a player’s control continuously since the beginning of his or her most recent turn can’t use any ability with the tap symbol in the cost. See rule 212.3f. | **'''104.4.''' The tap symbol is {{T}}. The tap symbol in an activation cost means “Tap this permanent.” A permanent that’s already tapped can’t be tapped again to pay the cost. Creatures that haven’t been under a player’s control continuously since the beginning of his or her most recent turn can’t use any ability with the tap symbol in the cost. See rule 212.3f. | ||
**'''104.5.'''The untap symbol is {Q}. The untap symbol in an activation cost means “Untap this permanent.” A permanent that’s already untapped can’t be untapped again to pay the cost. Creatures that haven’t been under a player’s control continuously since the beginning of his or her most recent turn can’t use any ability with the untap symbol in the cost. See rule 212.3f. | **'''104.5.'''The untap symbol is {{Q}}. The untap symbol in an activation cost means “Untap this permanent.” A permanent that’s already untapped can’t be untapped again to pay the cost. Creatures that haven’t been under a player’s control continuously since the beginning of his or her most recent turn can’t use any ability with the untap symbol in the cost. See rule 212.3f. | ||
**'''104.6.''' A tombstone icon appears to the left of the name of many [[ | **'''104.6.''' A tombstone icon appears to the left of the name of many [[Odyssey block]] cards with abilities that are relevant in a player’s graveyard. The purpose of the icon is to make those cards stand out when they’re in a graveyard. This icon has no effect on game play. | ||
**'''104.7.''' A type icon appears in the upper left corner of each card from the [[Future Sight]] set printed with an alternate | **'''104.7.''' A type icon appears in the upper left corner of each card from the [[Future Sight]] set printed with an alternate “[[timeshifted]]” frame. If the card has a single card type, this icon indicates what it is: claw marks for creature, a flame for sorcery, a lightning bolt for instant, a sunrise for enchantment, a chalice for artifact, and a pair of mountain peaks for land. If the card has multiple card types, that’s indicated by a black and white cross. This icon has no effect on game play. | ||
**'''104.8.''' Each activated ability of a [[planeswalker]] has an arrow-shaped loyalty symbol in its cost. Positive loyalty symbols point upward and feature a plus sign followed by a number or an X. Negative loyalty symbols point downward and feature a minus sign followed by a number or an X. [+N] means “Put N loyalty counters on this permanent,” and [-N] means “Remove N loyalty counters from this permanent.” | **'''104.8.''' Each activated ability of a [[planeswalker]] has an arrow-shaped loyalty symbol in its cost. Positive loyalty symbols point upward and feature a plus sign followed by a number or an X. Negative loyalty symbols point downward and feature a minus sign followed by a number or an X. [+N] means “Put N loyalty counters on this permanent,” and [-N] means “Remove N loyalty counters from this permanent.” | ||
|}} | |}} | ||
{{rule-stub}}[[Category:Magic rules]] | {{rule-stub}}[[Category:Magic rules]] | ||
Revision as of 17:53, 5 May 2008
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