Evident's Comments
Ephemi's C'Thun Control Warrior Decklist Guide & Card Discussion (Standard)
Revenge or Crazed Worshipper. The deck probably gets slightly weaker without Baron.
Midrange Shaman Deck List Guide (December 2016, Standard) - Season 33, Gadgetzan Meta
Eternal Sentinel and a second Feral Spirit (or double Sentinel).
Th3Rat's Dragon Warrior - Hearthstone Americas Spring Prelims 2016
Sylvanas could work.
Fluffy's (Standard) Midrange Hunter (May 2016, Season 26)
No Carrion Grub?! You could double up the Flame Juggler.
Blake's Reno/N'Zoth/Yogg-Saron Dragon Shaman - Hearthstone Americas Spring Prelims 2016
I’m not sure how to replace anything in this deck, it’s pretty crazy!
Tempo Warrior Deck List Guide (June 2016, Standard) - Season 27
If you haven’t subbed in Sylvanas in yet then that would work. You could also try Nefarian.
Freeze Mage Deck List Guide (Post Nerf) - Kobolds - March 2018
For this deck Alexstrasza is a priority. It depends which deck you wanted to play.
Talion's N'Zoth Ramp Druid - Hearthstone Americas Spring Prelims 2016
I imagine it’s just there for the big taunt. It would probably be a bad thing if it procs after you play N’Zoth.
Blake's Reno/N'Zoth/Yogg-Saron Dragon Shaman - Hearthstone Americas Spring Prelims 2016
If you draw the duplicate card then Reno will still work.
Warlock Zoo Deck List Guide - Witchwood - August 2018
You can try Harvest Golem for Imp Gang Boss. Frostwolf is a decent replacement for Sea Giant. You might just try a second Dark Iron Dwarf or Argent Squire instead.
Fr0zen's Yogg-Saron Tempo Mage - Hearthstone Americas Spring Prelims 2016
Fixed, sorry about that.
Sjow's C'Thun Control Warrior (June 2016, Season 27)
Ragnaros could work in that spot if you have it.
Fluffy's (Standard) Midrange Hunter (May 2016, Season 26)
You could go River Crocolisk or second Flame Juggler and Carrion Grub.
N'Zoth Paladin Deck List Guide (June 2016, Standard) - Season 27
I don’t know if this is worth dusting all your old stuff for, but it seems like a solid deck. I would maybe wait until after the Americas Spring Prelims and see how it does there.
Brian Kibler's N'Zoth/Yogg-Saron Control Priest (Standard, Season 26)
I wouldn’t aggressively try to make this deck, it’s probably not super competitive (if that’s your goal). N’Zoth is a pretty safe card to craft because of N’Zoth Paladin.
Saraad is pretty slow, but so is Cairne and Sylvanas. I think it can work in this deck, but I’d still rather go Sylvanas.