Actually, straight from Wizards, it DOES stay in effect IF you attach it BEFORE you Shapeshift.

This has been me (Matthew), reminding you that if you disagree with another person's card interpretation, or aren't sure about how to play certain cards, check out the WotC rulings.

E-mail me for ANY reason you so desire, except for solicitation, auditing and viruses, at yeagers@urx.com.

Cya!