This is something I've never been clear on. Is it an ability that costs mana to activate or one that adds mana to your mana pool, eg birds of paradise?
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Modern UBG B/U/G control BBB MBC WUR Control WWW Prison RRR Goblins
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To be more precise, to be considered a mana ability it has to be:
* An activated ability that can add mana to a player's mana pool when it resolves, it doesn't targets, and it's not a loyalty (planeswalker) ability. So Birds of Paradise has a mana ability, but Deathrite Shaman and Koth of the Hammer don't (shaman's targets, Koth's is loyalty).
* A triggered ability that can add mana to a player's mana pool, doesn't target, and that triggers when an activated mana ability being activated - Overgrowth has a mana ability, but Cathodion doesn't (triggers from something else happening)
Mana abilities don't use the stack and have special permission to be activated when other activated abilities normally can't (when something is being cast or resolving, or during special turn actions like declaring attackers, if mana payment is required).
A triggered ability that can add mana to a player's mana pool, doesn't target, and that triggers when an activated mana ability being activated - Overgrowth has a mana ability, but Cathodion doesn't (triggers from something else happening)
Triggered mana abilities can be triggered by other triggered mana abilities, not just by activated mana abilities.
Off the top of my head, the only triggered mana ability I can think of which could potentially do so currently is Caged Sun (f.e.: turn Caged Sun into a creature, turn the creature into a Saproling, Life and Limb; Caged Sun now triggers its own triggered ability)
A triggered ability that can add mana to a player's mana pool, doesn't target, and that triggers when an activated mana ability being activated - Overgrowth has a mana ability, but Cathodion doesn't (triggers from something else happening)
Triggered mana abilities can be triggered by other triggered mana abilities, not just by activated mana abilities.
No, they can't.
605.1b. A triggered ability without a target that triggers from activating a mana ability and could put mana into a player's mana pool when it resolves is a mana ability.
605.5a. An ability with a target is not a mana ability, even if it could put mana into a player's mana pool when it resolves. The same is true for a triggered ability that could produce mana but triggers from an event other than activating a mana ability, or a triggered ability that triggers from activating a mana ability but couldn't produce mana. These follow the normal rules for activated or triggered abilities, as appropriate.
Off the top of my head, the only triggered mana ability I can think of which could potentially do so currently is Caged Sun (f.e.: turn Caged Sun into a creature, turn the creature into a Saproling, Life and Limb; Caged Sun now triggers its own triggered ability)
Oh. Caged Sun. If its triggering from a triggered ability, it doesn't fit the definition of a mana ability according to the rules. It's an official ruling that conflicts with the rules.
Hmm, when did that get changed? The wiki page on mana abilities quotes the comp rules from 2009, when it was rule 406 rather than 605 "a triggered ability without a target that triggers from a mana ability and could produce additional mana."
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Modern
UBG B/U/G control
BBB MBC
WUR Control
WWW Prison
RRR Goblins
Legacy
BBB Pox
UBG B/U/G Control
UWU StoneBlade
UW Miracle Control
1:may produce mana when it resolves
2:doesn't target
3:isn't a loyalty ability
To be more precise, to be considered a mana ability it has to be:
* An activated ability that can add mana to a player's mana pool when it resolves, it doesn't targets, and it's not a loyalty (planeswalker) ability. So Birds of Paradise has a mana ability, but Deathrite Shaman and Koth of the Hammer don't (shaman's targets, Koth's is loyalty).
* A triggered ability that can add mana to a player's mana pool, doesn't target, and that triggers when an activated mana ability being activated - Overgrowth has a mana ability, but Cathodion doesn't (triggers from something else happening)
Mana abilities don't use the stack and have special permission to be activated when other activated abilities normally can't (when something is being cast or resolving, or during special turn actions like declaring attackers, if mana payment is required).
Off the top of my head, the only triggered mana ability I can think of which could potentially do so currently is Caged Sun (f.e.: turn Caged Sun into a creature, turn the creature into a Saproling, Life and Limb; Caged Sun now triggers its own triggered ability)
Two Score, Minus Two or: A Stargate Tail
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No, they can't.
605.1b. A triggered ability without a target that triggers from activating a mana ability and could put mana into a player's mana pool when it resolves is a mana ability.
605.5a. An ability with a target is not a mana ability, even if it could put mana into a player's mana pool when it resolves. The same is true for a triggered ability that could produce mana but triggers from an event other than activating a mana ability, or a triggered ability that triggers from activating a mana ability but couldn't produce mana. These follow the normal rules for activated or triggered abilities, as appropriate.
Oh. Caged Sun. If its triggering from a triggered ability, it doesn't fit the definition of a mana ability according to the rules. It's an official ruling that conflicts with the rules.
Two Score, Minus Two or: A Stargate Tail
(Image by totallynotabrony)