You can usually tell these from the two gold overlapping quarter circles, or from the additional information on it for example, there were cards released at D23, Disneys annual conference, which contain a D23 logo instead
The other key difference is that Sail the Azurite Sea allows the controlling player to draw a card
But nostalgia is a hell of a drug, so you can grab one for as low as $69.74, break out the big guns as the foil version is up to $254.70 at the time of publication
They can be in either non-foil or traditional foil
Amber has a lot of great songs, but for this deck archetype you want to be spending your ink on characters as often as possible, only sacrificing tempo in order to generate more characters to play
Any such choices will be made separately when the copy resolves