I was thinking.. what if there was a new villain that attacked Gotham, a new villain by the name of.. idk, Alchemin. A witch lady that has a vast amount of different potions and gases for situations. Even Gas-Masks weren't strong enough for her gases.

What if she attacked Gotham to see what the "Fuss" of this "Batman" guy is and why no one beat him, she goes in, attacks, loses.

She is very surprised she is beaten, because very few have exploited her potion's weakness. When they are face to face batman apprehends her but just before the apprehension, she turns around and scratches batman in the chin and says "I just granted this crusader to be 35 forever to defend his city".

She's apprehended and Alfred says "Sir, I don't know if this age is a curse to your doom of watching this city die, or a gift to stay the guardian of this city forever". A year later Bruce has made a cure for his gift/cure, just in case he one day realizes he doesn't want to stay young, he makes 2 copies, one in a secret room in his mansion, the other in his bat-cave in a safe.

Is this a Gift or a Curse?