While you can freely cast the first, the second must be saved to win the game since the card exiles itself as part of its resolution
Aside from being a Squirrel, which is very exciting in and of itself, they also double your token count, but make half of those come in as 1/1 Squirrels
The engine ability alone would be absurd
In the wheel is the Aurelian Gyrosensor upgrade put there with the help of Tinker Bell Very Clever Fairy in Maurices Workshop
The top of the box becomes the discard/graveyard pile, and the bottom is used as the library.
While proving that cards can come off of the Reserved List is a big deal in and of itself, perhaps more important is the reason: Wizards stated, in black and white, that community support for the change made it happen