I've been using Auric Rush on my midrange war because of tempo magic. It's the only way to deal with Demetrious and All-Seeing Spire in the early game to keep them from snowballing.
Seems your deck is more on the aggro side of the build I think Sharpen will be a useful card to dish out damage quickly and efficiently.
Thanks! Yea, I think in the current meta (not a ton of relic removal now that zombies are rarer to face), an aggro relic list could surprise people.