Note about the Brilliant Event:
Brilliant Bogrod the Goblin can be placed by tapping the area under his elbow.
The Brilliant Shopping List can be placed by tapping the bottom left corner.
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No field guide rewards — Harry Potter: Wizards Unite Community Forum
Field Guides are not guaranteed rewards. Get Field Guides for returning Traces that you encounter on the Map. Higher threat Traces yield greater Field Guide rewards and are more likely to reward Field Guides than lower threat Traces.