If you just want the “next page” button to appear after you click some other button, you can make the “next page” button be “Show None” (in Widget mode, select the button, then from the Widget menu, pick “Show None”), and have the other button make the “next page” button solid:
on click do
nextpage.show:"solid"
end
Of course, once you test that button, you’ll have to go back and hide the “next page” button again. It might be worth having your deck begin with a “start game” button that specifically goes through and resets all these things before the game begins, so you don’t personally have to remember to do it each time you save the deck.