Rewind

Instant    (CMC:4)

Counter target spell, then untap up to four lands.

"Let's go over this one more time. . . ."

96 8ED • ENDermot Power

™ & © 1993—2003 Wizards of the Coast

Legal in: Modern,Urza Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

7/1/2012
Rewind targets only a spell. It doesn't target any lands. The lands are chosen on resolution. It doesn't matter who controls the lands.
7/1/2012
When Rewind resolves, you choose up to four lands and those lands untap once. You can't choose one land and have it untap four times, for example.
7/1/2012
If the spell is an illegal target when Rewind tries to resolve, perhaps because it was countered by another spell or ability, Rewind will be countered and none of its effects will happen. You won't untap any lands.
7/1/2012
If Rewind resolves but the target spell can't be countered, you'll still untap lands.