Y is for Yield

"Y is for Yield" is the twenty-fifth episode of the second season and the fifty-first episode overall of W.I.T.C.H. It first aired December 16, 2006.
==Synopsis==
Final exams coincide with a test of cosmic strength, as the Guardians hold the future of the Universe in their hands. But will a snake in the grass force all to yield to a horrible new power?
In the B-story, C.H.Y.K.N., Elyon Brown and Yan Lin Altermere, who are trapped on the Scepter of Phobos, try to talk with Taranee Cook by telepathy, but they make on her the migraine attack and Taranee must get over from it to study for exam.
Category:W.I.T.C.H. episodes