United in Stormwind Cards List & Guide
Provocazione. Rantolo di Morte: evoca una Bestia casuale da 3 Mana.
Say, what's this? Isn't this card supposed to be collectible, like Teacher's Pet is?
No, it's not. It's the special minion made for Book of Heroes (as you can see it doesn't have a watermark) and has a limited pool of generated cards to balance the battles in BoH a little. I've listed them on hs wiki page if you wanna see them. (type Teacher's Pet (boss) there, I didn't manage to post a correct link here)