Plant it to grow Adventure Idol Gate. These blocks can be punched by the world owner to open or close them. But if a player places an idol on an Adventure Pedestal, they will be reversed for that player - open ones will be shut, shut ones will be open.
Adventure Idol Gate Seed price in Growtopia: sells for about 6 WL (median of 1 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: BOLZO