Hearthpwn

• Moonfire (Passive): At the start of combat, Deal 1 damage to an enemy minion with the highest health. (To remove divine shield)
• Kill Command (2 Gold): At the start of next combat, Deal 3 damage for each beast you control to a random enemy minion (up to 21 damage to same monster)
• Tracking (1 Gold): Discover a Tier 1 minion. Summon it. (Great early game but not much you can do with 3 "summoned T1" that take up board space)
• Polymorph (6 Gold): At the start of next combat, transform the left-most enemy minion into a 1/1 Sheep (Just disable a minion at the cost of a lot of gold where you could've spent to search for golden minions)
• Blessing of Might (2 Gold): Give a minion +3 Attack. (Just to give some small guys a little boost. Attack isn't really good without health and this doesn't scale too fast)
• Mind Control (4 Gold): At the start of next combat, take control of a random enemy minion until after damage calculation (You don't keep it and opponent doesn't lose it)
• Sprint (7 Gold): Put all shop minion into your hand

• Savage roar
  • 0 cost and give your minion +2 attack next battle
  • Better theme wise and isn't too OP compared to Pyramad
• Steady Shot
  • I am not sure about this one (Could be too useless or too strong)
• Blessing of Kings
  • Being able to consistently give a minion +4/+4 is very strong, especially when compared with the same cost for Jaraxus (even though Jaraxus is pretty underpowered, this seem too strong +3/+3 is better)
• Inner Fire
  • Annihilan Battlemaster I think should be 2 or 3 gold
• Edwin's Assistance
  • Sell two cats for +4/+4. Very powerful because you can get strong units like Nightmare Amalgam early game and it become 10/12 in late game without any other buff because it keep +4/+4 when it become golden
  • At 3 gold, it is still OP late game because it is a consistent +6/+6 (10 + 2 gold when you sell two)
  • Should cost 4 gold
• Conceal
  • Should use same wording as Lich King
• Shadowstep
  • I think you are thinking about it adding a copy to hand?
  • The card is good even if it simply return to hand and remove from field because it will give you a space to sell and do other things
• Ancestral Spirit
  • This is balanced
• Inner Rage
  • Again, the buff is kept on golden so this is really strong
• Brawl 
  • Late game it would still be like 8-10 damages so this isn't really that goodT

TLDR: Shadowstep, Ancestral Spirit are the balanced and interesting one.