I'm glad that we've gotten this up!
As a quick clarification, we're proceeding with the name
Arena of the Valkyrie (AotV) as a nod to both the original Rise of the Valkyrie Master Set and the Arena of the Planeswalkers sets that are being used for this endeavor.
In case anyone isn't aware, the names of these sets are
Magic: The Gathering: Arena of the Planeswalkers,
Battle for Zendikar, and
Shadows Over Innistrad. All of the units that
@
NecroBlade
mentioned are dispersed throughout those three boxes, so if you're interested but don't have these figures, they're fairly easy to find!