Tip: If you place a moon, midpoint, or dragon coin through Map16, it will always respawn whenever you reenter that sublevel. It will not respawn if you add it through the Add Objects/Extended Objects window.
If you reach this block before a certain amount of time has passed in the level, it will give you a prize. There are three blocks included: one that will spawn a normal sprite, one that will spawn a custom sprite, and one that will turn into the next Map16 tile. Made by request.