This card floods the board with Squirrels at a terrifying rate
The most famous example was Chalice of the Void in Mirrodin , which was a tweaked version of a card Gary Wise turned in for one of his player-designed cards.) The actual design and development was very straightforward
Naturally Staff of the Storyteller is at its best in dedicated Token decks, but theres enough incidental token production these days that it should slot into most lists nicely
In my opinion, being more often on the play is more important for the tempo deck than an extra card in hand
Its effects are applied in top-to-bottom order (as listed on the card), so you can shuffle a creature from your graveyard into your library, then resolve the last ability to tutor it up to your hand
While on the battlefield, a Room card has the characteristics of its unlocked doors