What Does Quarry Do?
This is a card that can cut both ways.
On the positive side, you get to choose and put into your hand either one of the top to cards of your deck - and that card has its Power cost reduced by one. So not only do you gain tempo, you have twice the chance of getting the card you really want. At the very least you get to choose the more useful of the two.
The downside is that you have to discard the other card into your Void. So if both the top two cards in your deck are really good ones it can be really painful to have to throw one away.
For this reason you might want to consider including in your deck build cards that can get stuff back from the Void. For a Fire/Shadow that might include cards such as Dark Return, Grasping At Shadows and Smuggler's Stash.
This page written for Eternal version 1.22, Card Sets 1 & 2 Last updated: 26-07-2017