Serkova,First of the Council

Flying,Indestructible
{w}{u}:Exile target creature then return it to the battlefield at the beginning of your next upkeep
{w}{w}{u}{u}:Return target spell to its controllers hand,then copy that spell.You may choose new targets for the copy
When Serkova,First of the Council dies or is put
into exile from the battlefield, you may put it
into its owner's library third from the top.