Here is a quick overview of the bands.

Band Genre Founding Year Country Stormblast Discography
Augury Death Metal 2002 Canada augury Fragmentary Evidence (2009)
Blackguard Folk Metal 2001 Canada blackguard Profugus Mortis (2009)
Origin Death Metal 1997 USA origin Entity (2011)
Swashbuckle Thrash Metal 2005 USA swashbuckle Back To The Noose (2009)

swaschbuckle Crime Always Pays (2010)
Tankard Thrash Metal 1982 Germany tankard A Girl Called Cerveza (2012)
Vader Death Metal 1983 Poland vader Necropolis (2009)

vader Welcome To The Morbid Reich (2011)