Forum:Beckoning light

Can I use beckoning light when there necrovalley is active?

My opponent has 3 light cards in the grave and two Honests in his/her hand, and actives beckoning light. What will happen if I use transmigration prophecy to return two of the three light cards in his/her graveyard?24.193.88.193 15:28, January 30, 2010 (UTC)