Create a Bestiary

[dacster13]

Maybe event dispatchers might be suitable for this? According to the docs:

Event Dispatchers are best suited for telling other “listening” Blueprints that an event has happened. When that event occurs, those listening Blueprints can then react and do whatever you want them to do independently of each other.

https://docs.unrealengine.com/latest/INT/Engine/Blueprints/UserGuide/BlueprintCommsUsage/#eventdispatchers

So from how I imagine it, when you kill/talk/learn about a creature your bestiary will be listening for those events and can show the necessary information accordingly.