Let It Go

I - Return all lands to their owners' hands.
II - Return all artifacts and creatures to their
owners' hands.
III - Create a 1/1 Snowman token with
"Whenever Snowman blocks, prevent all combat damage that would be dealt to and dealt by it this
turn." Exile Let It Go, then return it to the battlefield (front face up).
"Let it gOOOOO"