Hi all! First time I ask a question and as it already sounds like a dumb one to myself, please don’t eat me alive

I was just wondering if playing first watch in a Diana deck it would be consider like one of the cards you can put under her afterwards: it doesn’t specifically negate or cancel anything but maybe it ignores the actual distribution of the mythos cards?
Hope it makes sense!

Thank you everyone and have fun!

Since first watch doesn't have the word "cancel" on it, it's not considered a cancel effect within the game's mechanics, so she can't put it under herself. For a card to count toward her ability, it needs to actually use the word cancel; like dodge, deny existence, ward of protection, etc.

Hope that helps! Welcome to the mythos!