June Wetherbee

: When June Wetherbee enters the battlefield, create a legendary artifact token named "June Wetherbee's Guide to Extraplanar Creatures."
: Whenever any player casts a creature type that has not been casted yet this game, put a loyalty counter on June and a book token on her Guide.
-1: You may put a creature from your hand to the battlefield with CMC equal to or less than the amount of book tokens on June's Guide