So I’ve added E.T.C., Band Manager into my Wild Highlander deck. I’ve drawn and played ETC during the game.
Later on, in that match, I got low HP and played Reno…
Well, just to look like a fool and him to not work.
I checked my deck and there are no duplicates, even the cards in ETC are cards that are not in my deck at all.
So what I think happens is, since ETC adds “The Band 3/3” those count as 3 duplicates and disables any Highlander no matter what.
My question to the devs is, is this intended?
Edit: This time it worked, something else has to break it in combination with ETC. If someone knows let me know. All I know is that there were no duplicates and no shuffle happening 
Hi there, my ETC didn’t work at all. Used in one deck with smoldering starfish, faceless many, and azure drake. Worked fine, then changed deck and use it with Reno, starfish and the rogue 2 mana stab, and it didn’t work. I played it but nothing happened
Heya, I was playing a HL burgle Rogue deck. I remember I played a “Contraband Stash” that repeated “Barricade” that I got from “Keywarden Ivory” and “Deal with a Devil” from “Jackpot!”. The other spells I had were really bad so I used ETC to grab “Lilian Voss” from my pool to reroll those spells (didn’t get to reroll since I had to reno the turn after) My other 2 options in my ETC were “Togwaggle’s Scheme” and “Steamcleaner”. I assume apart from reno not working and us both playing Rogue there were not more similar things ^^
Wish I could watch a replay now, sadly Firestone was not working for me in the new patch
I can’t even put it in a deck, it prevents me from connecting to a match.