Smoke

Enchantment    (CMC:2)

Players can't untap more than one creature during their untap steps.

137 ME4 • ENJesper Myrfors

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Legal in: Legacy,Vintage,Commander

Oracle Text (click to copy):

10/4/2004
Animated lands are affected by this spell. If on the battlefield with an effect that limits the number of land you untap, untapping an animated land will count as the one creature and the one land you can untap... thereby limiting you to one thing to be untapped.