Watch the TV spot for the the season 7 episode "Blue" of Smallville! Take a look below...

In the episode. Clark hears his mother's voice trapped in Kara's crystal, and releases her. She gives him Jor-El's ring made of Blue Kryptonite, which strips him of his powers.

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"Blue" airs on November 15th on The CW.

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Brian B. at Movieweb
Brian B.