The Keeper of Favorite Cards

When The Keeper of Favorite Cards enters the battlefield or attacks, name a nonland card and write it on your favorites list for this game. (You can have limitless favorites.)
Your favorite creatures get +1/+0.
Whenever you cast a favorite noncreature spell, create a 1/1 white Soldier creature token.

Flavor Text: CARD.

Card Details:
Set: Unknown Event
Collector Number: RW90