Energy pulse has been around longer, mainly. But it's also an interesting spell because it pierces the background, which is something we wanted to introduce to players early -- rather than having all six of the basic spells be basic recolors of the same idea (boooring! And new players might not trust that there is more interesting stuff lurking later), we wanted to instead show off at least a little bit of what the various options are. It's still pretty limited, but not as much as it could be.