The Measurement Of Souls

When The Measurement of Souls enters the battlefield, exile all creatures, then move them
and The Measurement of Souls to Spirit Realm.
(All token creatures are removed. Spirit Realm zone description is on the backside of this card)
Any player may pay {4} or {w}{w} to either move
any creature back from the Spirit Realm or move
a creature that player controls to Spirit Realm.