Core + 4 Series
The following are two sets of four decks each that can be built simultaneously using a single collection of the Master Set and the first four expansions that were released: The Roaring Rose, The Duchess of Deception, The Frostdale Giants, and The Children of Blackcloud. These decks can also be located by searching "Core + 4" as the title on Ashes.live.
Set A
Bear Fear (Jessa)
Sleep or Slash (Coal)
Burnt Leftovers for Leo
Set B
Because Ice Golems (Rin)
Secret Frost Force (Aradel)
Big Birds Bite Back (Saria)