Do I get any advantage with the Find Fiend spell if the fiend is actually a creature which I already completed on bestiary?

Question

I heard somewhere that completing the bestiary of a creature class with a fiend one and using the spell Find Fiend will make easier for me to reach the creature.

Anyone knows if that's actually true? If yes, how it works exactly the advantage?

Answer 1

When you have the creature unlock in your bestiary the message will say, instead of "unknown", the difficulty of the creature. This can be Trivial which is the easiest, Easy, Medium, Hard and Challenging. With this information you can get an idea of what monster is boost based on the direction the spell is telling you to go and the class. For example, if it says challenging instantly you know its a Soulwar creature because there are only challenging creatures in Soulwar