While i was playing against my son. My son had Freya Crescent, which the prior turn he had used sheltered by ghosts to take my Preacher of the Schism. So shelter by ghosts was active on his Freya . Then it was my turn i used the spell Claim the first born on freya and had paid the ward 2 to gain control of Freya. Upon paying the ward cost i then gained control of freya but then shelted by ghosts fell off and went to the graveyard and i got my preacher back. As far as i am aware THIS action SHOULD NOT have happened. But it did. Is there something i am missing, because as per the rules i have read the sheltered by ghosts should have remained active on freya for me to attack with her but as i said this didnt happen. It instead when to graveyard and i received my preacher back under my control as if i had destroyed the enchantment which i didnt. If i am missing someone someone please explain