This item can be rarely found in the Valarjar Strongbox, a reward from Supplies From the Valarjar. It also has a chance to be listed on the Black Market Auction House.
Here you can buy Valarjar Stormwing for EU or US Servers.
You'll get guide for getting Valarjar Stormwing
You'll be able to get Valarjar Stormwing
Additional budget for Character transfer or Character boost to max level. BMAH Services in Shadowlands now requirement to have a max level character on server, so Trial character will not work.
Free time on evening, if you choose selfplay option