mtg cards like winter orb [Fourth Edition Foreign Black Border ] players cant untap more than one land during their untap steps. Winter Orb - Foreign Black

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The key here is, if you know what color deck you're up against, you can arm yourself accordingly

Heres the basic stuff from the Comprehensive Rules to get us on the right path on determining what is and what isnt a mana ability: 605.1a An activated ability is a mana ability if it meets all of the following criteria: it doesnt require a target (see rule 115.6), it could add mana to a players mana pool when it resolves, and its not a loyalty ability

#97 Aether Storm (Homelands / 5th Edition) Why is it bad

Carrion Feeder is pretty swell here as well as a free sacrifice