descend down the train tracks at the train station, and follow the directions on the train tickets in the dispensers. when you reach the tracks that has ticket with the death symbol, use the scissors to cut the plant. then, the creature won't kill you, and you'll get the missing daylight gate sign. put it on the signpost that had the missing sign (right outside the stairs outside the station) and everything returns to normal! :)
if this causes any problems later on in the game, i have no idea. but the scissors do also come in handy if you wanna step inside the fairy ring! i havent solved that puzzle yet tho