Hearthpwn

Is Sherazin essential? Any replacement? 

OK thanks, will try Umbra :)

-1 SI Agent
-1 Acolyte of Pain
-2 Firefly

+1 Xaril
+1 Mimic Pod
+2 Hallucinate

Helps with draw and with mitigating Dirty Rat's sudden but inevitable betrayals.  Firefly is a dead card, I'm sure he's there for Sherazin, but he's fine on his own.  He eats a Hex or Polymorph vs Shaman or Mage, every single time.  That's okay.  Even dying once, he's useful with N'Zoth, and Shadowcasters can clone him easily, but you really don't want to fill the board with dead Sherazins, because there's not going to be room for N'zoth/Lepers at that point.  Clone Lepers, Play A-bomb, N'zoth it when it dies.  Mimic Pod is better IMO than Acolyte, because there's no way to buff him, and he only yields 1 card vs most classes with his low HP.  2 Extra Leper Gnomes is nice, cheap, and to the point.

SI Agent is clunky, compared to the versatility of Xaril, but if running 2x Xaril were an option, I'd still go 1-and-1.
Firefly is absolutely a dead draw, so disappointing to draw him at any point during the game.  Hallucinate can get you the AoE or other Tech you need to adapt to various opponent styles.  This is fun.  And it's better than I'd expect.  Kripparian makes some awesome, fun concepts that rarely pay off as well as this deck does.

67% winrate at the moment, firefly's pay off big time against any agro deck and against control you can chip away some hp for the upcomming lepers. so far most games i lost because i did a miss play. deck is fun different and doing actually pretty good atm. rank 9 so far. but maybe this deck does suprisingly well because people don't expect it.

Lol this deck is pretty good actually