Obzer,rith Seeker Of Stars

When Obzer,rith is added to your hand pay {x}
then scry that many cards and rearrange them
in any order on the top of your library.
then exile Obzer,rith for 3 turns then return it
either to your hand or to the battlefield
When Obzer,rith enters the battlefield all Abyssal
gain +1/+1 and cost {3} less to cast