Here is what Innova has to say about the Valkyrie:
 
This is one of the more iconic discs in the Innova lineup! The Valkyrie was one of the 5 original CE production discs and is now featured as the queen artwork on Innova’s new playing cards. The Valkyrie has a very comfortable grip in the hand and an even better flight. A great disc for beginners to learn on or for more advanced players to shape some incredible shots. Great for rollers, hyzer flips, or nice long turnovers, the Valkyrie is sure to find a spot in your bag if given the chance. Getting a decent amount of turn and some subtle fade at the end of the flight, these discs are perfect for players of all skill levels.