Loatheb could work.

It should, but you’ll lose out against other control decks.

You just have to draw one Shadowform and you’ll be able to use Reno.

An Acidic Swamp Ooze and maybe a Piloted Shredder. There’s lots of options when talking about Reno decks.

I think it’s too important in this deck, it clears minions and helps activate your combo.

It’s important, but you could try just adding a second Sludge Belcher.

Second Explosive Trap and Bow.

It depends, if you’re playing against a lot of Aggro Shaman, Secret Paladin, and Patron Warrior then Harrison is better. If you’re playing against a lot of control decks then Ysera might help.

Do you have Curse of Naxxramas? If you have the first wing of BRM then you have Grim Patron which is the only BRM card I see. If you don’t have Naxxramas, I wouldn’t bother.

Flame Juggler.

Second Brawl, Shielmaiden, or a Revenge.

That would work, but this deck is a bit more combo-oriented so it will suffer without Alexstrasza.

Shattered Sun Cleric, Harvest Golem, or Spider Tank. There’s a lot of decent 3-drops out there!

Explosive Sheep.

Second Holy Nova and Shadow Word: Death.

I don’t know if you can replace it. You win a lot of your games with the Arcane Golem, Power Overwhelming, and Faceless Manipulator combo. Alexstrasza sets that up pretty nicely.

I’d just use this deck instead: http://www.hearthstonetopdecks.com/decks/kolentos-season-23-malygos-rogue/

How are there no grounds for speculation? They changed the same cards for Blackrock Mountain right before it was announced. It’s obviously a clue, and Battle of Mount Hyjal is just one potential option, with it more likely being something to do with the Old Gods which explains most of the cards (if you read the Reddit thread).

Hello, the TB decks got more expensive when the release time was changed and I was able to have access to my main account on NA. I was using my EU account (EU started earlier), so I only had access to basic cards. I think most people do have Naxxramas, but I see your point about the legendaries. I will try and start releasing cheaper versions of decks in the future.

Ancient Shade is an iffy substitute. You could also try Loatheb and/or Savage Combatant.