We have a winner! Thanks to everyone who entered my contest to win a PDF of your choice from the Magic University series. The winner is:
TINUVIAL!
I collected all entrants in roughly chronological order, numbered the entries, and then used the Random.org random number generator to pick an integer within that range. (FYI, the winning number was 9.)
I’ll do this again when the printed edition of The Siren & The Sword comes out!