Great job man!
Since there is no mage deck in the list, I'll place mine here xD
I got doomsayer into war axe. and found zilliax. I agree that deck is far from perfect.
Hope you will find something good for this, good luck
There are plenty of good control options out there. They can be great decks, but they tend to be bad against the ridiculous endgame of Warlock. On the flip side, Warlock is pretty bad against everything else in the current (very polarized) meta.
So your options are:
While I agree that it's a very Warlock thing to do, I think the card is fine and that sacrificing your own minion for face damage is acceptable and a cool play to make. If anything, Piercing Shot should only target enemy minions so that you can play against it by not developing/playing weenies at all - that'd be nice. Counterplay for cards is important, and with Piercing Shot being able to just ignore the opponents board and hit their own 1/1's - while very cool in my opinion - maybe isn't a good thing.
Though it's still a 4 mana play that loses them a minion. That seems pretty fair to me.
Current Hunter decks are some of the most balanced and fair decks I've seen in a while. They drop fairly costed minions combined with fairly costed spells and try to smorc the enemy hero because that is what Hunter is designed to do given his hero power and the complete lack of healing. There are two way to counter that: either (a) try to outheal their damage till they run out of gas (only Priest can do that well) or (b) try to remove their tempo while developing yours and kill them first (a deck like Rush Warrior can do that well for example). What you cannot do is sit back and play one removal spell at a time while they slowly chip down your HP total (what Warlock does)
This is all Warlock, Mage, and Druid's fault, actually.
Every single non-aggro deck gets eaten alive by Control Warlock, DoL Mage or Ramp Druid.
All 3 of them have their fair share of problems.
Do you have all other legendaries already?
I think the deal was that he is still available in packs, but for the first week he was marked for a full dust refund if you happened to open him in a pack, because you could get him right away on the rewards track.
The same was supposed to be true for Mankrik. But I'm not sure how the diamond version works into this equation.