Rule 107.1b

Most of the time, the _Magic_ game uses only positive numbers and zero. 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 that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It assigns 0 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: Viridian Joiner 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.

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Most of the time, the _Magic_ game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It assigns 0 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: Viridian Joiner 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.

View this change

Most of the time, the _Magic_ game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It assigns 0 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: Viridian Joiner 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.

View this change

Most of the time, the _Magic_ game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It assigns 0 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: Viridian Joiner 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.

View this change

Most of the time, the _Magic_ game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It assigns 0 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: Viridian Joiner is a 1/2 creature thatwith saysthe ability "{T}: Add to your mana pool 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.

View this change

Most of the time, the _Magic_ game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It assignsdoesn't 0assign 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: Viridian Joiner is a 1/2 creature with the ability "{T}: Add to your mana pool an amount of {G} 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.

View this change

Most of the time, the _Magic_ game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It doesn't assign 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: Viridian Joiner is a 1/2 creature with the ability "{T}: Add to your mana pool an amount of {G} 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.

View this change

Most of the time, the Magic game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player's life total to a specific value, doubles a player's life total, or sets a creature's power or toughness to a specific value, or otherwise modifies a creature's power or toughness. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It doesn't assign 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: Viridian Joiner is a 1/2 creature with the ability "{T}: Add to your mana pool an amount of {G} 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. Example: Chameleon Colossus is a 4/4 creature with the ability "{2}{G}{G}: Chameleon Colossus gets +X/+X until end of turn, where X is its power." An effect gives it -6/-0, then its ability is activated. It remains a -2/4 creature. It doesn't become -4/2.

View this change

Most of the time, the Magic game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect setsdoubles aor player'ssets life total to a specific value, doubles a player's life total, or sets a creature's power and/or toughness to a specific value. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It doesn't assign damage in combat. Its total power and toughness is 2. You'dGiving have to give it +3/+0 towould raise its power to 1. Example: Viridian Joiner is a 1/2 creature with the ability "{T}: Add to your mana pool an amount of {G} 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. Example: Chameleon Colossus is a 4/4 creature with the ability "{2}{G}{G}: Chameleon Colossus gets +X/+X until end of turn, where X is its power." An effect gives it -6/-0, then its ability is activated. It remains a -2/4 creature. It doesn't become -4/2.

View this change

Most of the time, the Magic game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect doubles or sets to a specific value a player's life total or athe creature's power and/or toughness of a creature or creature card. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It doesn't assign damage in combat. Its total power and toughness is 2. Giving it +3/+0 would raise its power to 1. Example: Viridian Joiner is a 1/2 creature with the ability "{T}: Add an amount of {G} 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. Example: Chameleon Colossus is a 4/4 creature with the ability "{2}{G}{G}: Chameleon Colossus gets +X/+X until end of turn, where X is its power." An effect gives it -6/-0, then its ability is activated. It remains a -2/4 creature. It doesn't become -4/2.

View this change

Most of the time, the Magic game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect doubles or sets to a specific value a player's life total or the power and/or toughness of a creature or creature card. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It doesn't assign damage in combat. Its total power and toughness is 2. Giving it +3/+0 would raise its power to 1. Example: Viridian Joiner is a 1/2 creature with the ability "{T}: Add an amount of {G} equal to Viridianthis Joinercreature's power." An effect gives it -2/-0, then its ability is activated. The ability adds no mana to your mana pool. Example: Chameleon Colossus is a 4/4 creature with the ability "{2}{G}{G}: ChameleonThis Colossuscreature gets +X/+X until end of turn, where X is its power." An effect gives it -6/-0, then its ability is activated. It remains a -2/4 creature. It doesn't become -4/2.

View this change

Most of the time, the Magic game uses only positive numbers and zero. 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 needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect doubles, triples, or sets to a specific value a player's life total or the power and/or toughness of a creature or creature card. Example: If a 3/4 creature gets -5/-0, it's a -2/4 creature. It doesn't assign damage in combat. Its total power and toughness is 2. Giving it +3/+0 would raise its power to 1. Example: Viridian Joiner is a 1/2 creature with the ability "{T}: Add an amount of {G} equal to this creature's power." An effect gives it -2/-0, then its ability is activated. The ability adds no mana to your mana pool. Example: Chameleon Colossus is a 4/4 creature with the ability "{2}{G}{G}: This creature gets +X/+X until end of turn, where X is its power." An effect gives it -6/-0, then its ability is activated. It remains a -2/4 creature. It doesn't become -4/2.

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