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This search based on the March 17, 2008 release of the Rulings.
406 - Mana Abilities
- 406.1 - A mana ability is either (a) an activated ability without a target
that could put mana into a player's mana pool when it resolves or (b) a
triggered ability without a target that triggers from a mana ability and
could produce additional mana. A mana ability can generate other effects
at the same time it produces mana. [CompRules 2007/05/01]
- 406.2 - Spells that put mana into a player's mana pool aren't mana
abilities. They're played and resolved exactly like any other spells.
[CompRules 2007/05/01]
- 406.3 - A mana ability remains a mana ability even if the game state doesn't
allow it to produce mana. [CompRules 2003/07/01]
Example: A permanent has an ability that reads "{Tap}: Add {G} to your
mana pool for each creature you control." This is still a mana ability
even if you control no creatures or if the permanent is already tapped.
[CompRules 2003/10/01]
- 406.4 - A mana ability can be activated or triggered. Mana abilities are
played and resolved like other abilities, but they don't go on the stack,
so they can't be countered or responded to. See Rule 411, "Playing Mana
Abilities," and Rule 408.2, "Actions That Don't Use the Stack."
[CompRules 2003/07/01]
- 406.5 - Abilities that produce mana but trigger from events other than
playing mana abilities do use the stack. So do abilities that don't
produce mana but trigger on playing mana abilities.
[CompRules 2007/05/01]
- 406.6 - If a mana ability would produce one or more mana of an undefined
type, it produces no mana instead. [CompRules 2003/12/01]
Example: If you control no lands, an ability that reads "{Tap}: Add to
your mana pool one mana of any type that a land you control could produce"
will not produce any mana. [CompRules 2003/12/01]
- 406.Ruling.1 - If a mana ability can't produce any mana, it's still legal to
play the ability, but no mana will be produced on resolution.
[WotC Rules Team 2003/12/01]
- 406.Ruling.2 - Playing a mana ability that happens to produce no mana still
counts as playing that ability. Some abilities trigger when a land is
tapped for mana, and they will trigger when a land is tapped for a mana
ability even if that ability generates zero mana. [D'Angelo 2007/12/05]
This search based on the March 17, 2008 release of the Rulings.
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