Hearthpwn

Just recording the specific list I used to reach legend with Knuckles, on 3/3/21.  I'm going to miss classic Tracking; it's so important in this deck.  

While the deck can OTK, as early as turn 7, in general you want to think of the Knuckles combo as a finisher, while getting as much chip damage to face as possible with hero power and weapon.  The ultimate "Plan B" is Deathstalker Rexxar.

The most notable difference in this deck, compared to my other recent Knuckles lists, is the inclusion of a second beast, Vicious Scalehide.  It makes finding Knuckles less consistent, but it gives you a fighting chance against tempo decks like Secret Mage.

Generally mulligan for Trueaim Crescent and Scavenger's Ingenuity.  Against Priest, keep Tracking, and maybe Scalehide (so it's not drawn by Ingenuity).  Against Druid and Paladin, keep a Grievous Bite or Bola Shot for early board control.  Against Rogue and Mage, maybe keep a Rocket Augmerchant for an early game ping.

Tailor the secret package in the deck for your own pocket meta.  Wandering Monster is frequently a disappointment, and sometimes catastrophic.  You can't count on Explosive Trap to clear much of anything.  Bear Trap is a decent turn 2 against Secret Mage.  The reason I have secrets at all in the deck is to use Mad Scientist as pseudo-draw.

Remember that playing Rocket Augmerchant and Goblin Prank on Knuckles only gives him one attack.  Goblin Prank is more damage, but also more expensive.  Rocket Augmerchant is cheaper, and doesn't care if your opponent played Loatheb on the previous turn.