I'm having a lot of success on ladder with a mono red list that features big units and some direct damage. This is clearly one of the big winners from the Buried Memories expansion since the new red cards are all very good.
Just a few notes about the deck:
Don´t be afraid of plunder something away in the early game for Passionate Stonehammer
just to avoid missing a power drop. It´s very important to get to five power as soon as possible. The same is true for playing Fire Etchings
in the early game.
Getting to five power is really important here because the top of the curve is very very powerfull (Inferno Den
is great) and Deheen Blitz
is really good here to deal those last points of damage (although i don´t think Deheen Blitz
is very good in valkyries, his best use is in an aggressive shell, like this one).
By the way, i´ve played a lot Midchief Salus
with one or two amplifies and it is very good, although you should not wait until you got more power if you can play it right way.
I´ve made through diamond III to masters with it in three days. Have fun!!