"Really? I didn't know that", Adrien replied, his head tilted on one side. "Abstract threats, like...?".

"Like fear, for example".

"How does that work?".

"All defense magic hinges on the same principle: you need to channel a thought that will counteract your opposition. To make a more concrete example: if you were to be attacked by a fireball, you could think of being sheltered by a wall of water".

"Could I also think of dousing the fireball with a stream of water?".

"Yes - that would be a more proactive approach, which would still work".

Adrien seemed in thought for a second. "What about... if the fireball is eaten by a water dragon?".