Assertion: activated ability | /r/CapableOf | add mana
Facets:
value: to a player’s mana pool
type: TRANSITIVE-OBJECT
Source sentences:
text: An activated ability is a mana ability if it meets all of the following criteria: it doesn’t require a target (see rule 115.6), it could add mana to a player’s mana pool when it resolves, and it’s not a loyalty ability.