I made a spell damage mage deck, think it could be pretty good.
Leave your thoughts here:
http://www.hearthstonetopdecks.com/decks/spell-damage-mage/

I compare this to Renounce Darkness from warlock, their effect is pretty similar.

A few differences:
– Renounce is cheaper
– Renounce reduces card cost in your hand
+- Renounce changes cards in your hand
+ Espionage cards only cost 1.

Now Renounce was played in a meme deck, however could still win you a lot of games if you’re lucky. (ofcourse this had a lot to do with the Barnes-Y’Shaarj combo).
Renounce has the upside that it’s cheaper and it can get rid of useless cards in your hand. But because of the existens of Preperation and because I think changing your hand in random cards is overal bad (including making them cost 1 less), these upsides are almost non-existant.
Espionage on the other hand has the huge upside of you being able to draw a 1 mana high tempo card. Combo this with Rogue’s amazing carddraw:
-Fan of knives (Shiv or Thalnos)
-Elven Minstrel
-Gadgetzan (works well with 1 mana spells)
-Sprint
Running a lot of carddraw also makes rogues strongest card, , even stronger.
Combine this with Valeera the Hollow and you might have yourself a control rogue.

Now I’m not saying it’s OP, it’s randomness will probably (at least a little bit) make this a meme card. But keep in mind the amount of different decks that are playable right now, some of them also look like meme decks. I think it might be unwise to say this card is unplayable because you’ll probably be surprised.