If you’re wondering how to get HS card Ethereal Peddler – you have to complete the Rogue Class Challenge in The Spire, the fourth wing in the adventure One Night in Karazhan.
There are two class challenges as part of The Spire. Druid, and Rogue.
The Rogue Challenge puts you in with the boss – Shade of Aran.
Hearthstone Card Ethereal Peddler
The card reads: Battlecry: Reduce the Cost of cards in your hand from other classes by (2).
Time to work on those burgle decks. 2 mana can be game changing on the right cards, it’s still RNG heavy what cards you will get but I think this is a decent card that will see play in the right decks.