The absolute WORSE card you can get from this is Magma Rager, or maybe one of the few 2/2s there are. Most of the 1/4s tend to come with an effect that makes them usable at the most, whether thats Windfury or Taunt/Charge.
On average, you'll get a 3/3, so its essentially an 8/8 for 6 mana. Even in the worse case, its either a 10/6 for 6 mana, or a 7/7 for 6 mana.
Best case is either King Mukla for 10/10, or Arcane Golem for a 4 mana charge.
Arcane golem got nerfed, still 9/9 is nothing to complain about, you could get a 0 3 alarm o bot and that is probably the worst unless left on the board, there are currently 74, , ( was 75 but BGH is now 5 mana) cards this could give, I'm predicting more 3 cost minions to be released so at least 80 3 cost minion cards.
But if you compare it to Piloted Sky Golem it isn't super OP anymore. This has a bit different stats and has a Battlecry instead of a Deathrattle, but the minion summoned costs 1 less. I think this might be played in some Mage decks.
you are so wrong. It is like 2times better than piloted sky golem.
1) Battlecry could be stopped. You cant silence it, you cant do anything - mage just get value 8 mana value for 6 mana - what is it. No way to deal with this.
2) Golem got 4 hp, this guy got 5 hp. That one health is really huge thing, cuz with golem can trade lots of minions and lots's of spell + ping. Our guy is really hard to kill.
3) 3 mana minions - is not 2 mana or 4 mana. (cap). I meant on 3 mana you can get lots of reaaaally good minions with special abilities, shields, charge and so on. So in this case random 3 mana minion is better then random 4 mana minion.
Can we please not whine and cry endlessly every time when a good card is released? This is a very good card. Not really "fair", obviously, but may I ask which fair cards see a lot of play in constructed today? This is not at crazy op level.
By the way the best case for this is not Mukla but Injured Blademaster in terms of pure stat value. Though that one time when I got Brann out of this while playing a C'Thun deck was pretty crazy.