Let's say I have a Leaf Brooch and want to play a card like Out of Sight that already has Secrecy of 3 (with a normal cost of 5) Would the brooch allow me to treat it as secrecy 4? I thought I saw a rule somewhere that said keywords with quantities such as Doomed and Archery would just stack.
Also, would this allow three brooches among your heros to potentially reduce the total cost of the first event you played by 3?