So apparently there is no + Action ruin at all but Donald counted the Ruined Chapel as one of the three easily guessable one. Well, some did guess it, but as the mysterious one...
I must admit that the Ruined Chapel seems to be somewhat too strong to me for a card that is supposed to be bad. Especially since it will only come up in games with junk floating around. Add in a curser and you might easily wish for that Ruined Chapel if no other trasher is around.