This Card is trying to give you the information, maybe it should say it more explicitly, like "Avoid fighting them for now, come back later..."
It was not the case. I have missed another hint from Tutorial - in "Gather", for some reason it was not clear for me that I should "click" on the gathered item to actually collect it. It was intuitive that I received the items instead of watching on them and go away. Maybe it is needed to implement an "auto-collect" the items upon reveal.