Pore Over the Pages

Oracle Text
Draw three cards, untap up to two lands, then discard a card.
Card Rulings
4/8/2016 You choose which lands to untap after you have drawn three cards. Lands controlled by any player may be untapped this way.
Draw three cards, untap up to two lands, then discard a card.
Seriously. Even with just two lands untapped instead of the full five, there's just something that seems inherently wrong with the Rewind mechanic.