Power Sink

Interrupt    (CMC:1)

Counter target spell unless its caster pays an additional . If he or she does not, tap all mana-producing lands that player controls and remove all mana from his or her mana pool.

89 UZ • ENAndrew Robinson

™ & © 1993—1998 Wizards of the Coast

Legal in: Urza Block,Tempest Block,Mirage Block,Ice Age Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

Power Sink {X}{U} Instant Counter target spell unless its controller pays {X}. If he or she doesn't, that player taps all lands with mana abilities he or she controls and empties his or her mana pool.

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10/4/2004
Does not increase the mana cost of the spell. It just requires a separate expenditure in order for it to succeed.
10/4/2004
When this spell resolves, you either pay X mana or let your lands become tapped. The lands that become tapped are not "tapped for mana". If you choose to pay, you may pay the X mana using whatever mana abilities you want to use.
3/1/2010
Only lands that actually have mana abilities will get tappped. This includes basic lands and lands with mana abilities printed on them, as well as lands which have been granted a mana ability by some effect.

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