Rule evolution
Rule 106.5
Earliest archived Rules release: 2009-10-01 · 1 wording revision · 0 renumberings
Earliest archived Rules release106.5Details
If an ability would produce one or more mana of an undefined type, it produces no mana instead. Example: Meteor Crater has the ability "{T}: Choose a color of a permanent you control. Add one mana of that color to your mana pool." If you control no colored permanents, activating Meteor Crater's mana ability produces no mana.
Wording changed106.5Details
If an ability would produce one or more mana of an undefined type, it produces no mana instead. Example: Meteor Crater has the ability "{T}: Choose a color of a permanent you control. Add one mana of that color
to your mana pool." If you control no colored permanents, activating Meteor Crater's mana ability produces no mana.