You could just react a Secret Chamber and then get Trader/Watchtower into your hand.
I guess this would work, but not what I had in mind. Not only do I not have any other 'on-gain' reactions in my hand now, I never do until it is my turn (or later).
Ahhh, sorry, I meant I do *not* gain the Curse.
And no Lighthouse in play (that's certainly a valid answer, but not what I had in mind).
Champion in play.
I don't know anything about Adventures, so this is not what I had in mind.
So you're saying there are a lot of ways not to gain this Curse, but you want us to guess the specific one you thought of?
List of applicable Reactions:
Moat, Secret Chamber, Caravan Guard, Watchtower, Trader
List of applicable Durations:
Lighthouse, Caravan Guard, Champion