What about using Raid Leader in place of Acherus Veteran and Hunter’s Mark instead of Tracking?

This deck seems like pure theory-crafted wishful thinking to me. (Don’t get me wrong, I think it’s a fun & clever idea, just not practical) Do you have any replays you can link using this deck so we can see it in action?

The earliest you could get the stacked damage from Clockwork Automaton would be turn 6, and that’s only if you have the coin, Clockwork Automaton, Carnivorous Cube and Play Dead in your hand already. (or at the very least the Clockwork Automaton + coin and amazing luck with your turn 5, turn 6 & turn 7 card draws) You can get Clockwork Automaton out on turn 4 if you have a coin at the earliest. (This only gives you 3 turns to build up any type of defense to keep your Clockwork Automaton alive.) Then on turn 5 you could use Carnivorous Cube (assuming your Clockwork Automaton is still alive), but not your hero power. You’ll have to wait until turn 6 so you could use Play Dead + Hero Power to then have your 12-damage shot and then on turn 7 you could play Faceless Manipulator + Hero Power for a 24-damage shot potentially ending the game (unless your opponent has been healing) All this assumes that your taunts are powerful enough to survive to keep your Clockwork Automaton(s) from being killed by minions, (never mind spells that can bypass your taunts to take out the Clockwork Automaton) If you wait until turn 5 to play Clockwork Automaton, you have an extra turn to put a taunt in play and then you can play Carnivorous Cube + Play Dead on turn 6 and then Faceless Manipulator on Turn 7 + Hero Power for a 24-damage shot.

This sounds like fun if as you said, “the stars align” and you get perfect card draws and your opponent somehow let’s your Clockwork(s) survive to the point where you can actually combo w/Carnivorous Cube + Play Dead and/or Faceless Manipulator, you’ll never be able to pull off a 12-damage shot, never mind a 24 or higher shot.