Been seeing a lot of complaints about this new archetype. Decided to try it yesterday to see what the fuss is about. Some footnotes below. Key points in bold. tl;dr at the end.
Yes, it's very strong. Yes, it's very reliable. There are no "bad draws" with it, if piloted correctly, and it will always pop off, if uncontrolled. Yes, I managed to win about 5 out of 6 games I played with it (Rank 3).
But all it has is Drakenborg.
A single Korathi or Bearification completely OBLITERATES this deck.
Without hyperbole - I cannot think of a single other deck that seizes and implodes so hard when countered by a single card. Most other decks that play around single card usually have a plan B and C, or they can at least put some points down even if they lose their main wincondition.
But Drakenborg decks functionally have no chance to win if you nuke Drakenborg the moment it hits the board. There are also no other valid targets for either Korathi or Bearification. There's no thought process here for you -> you figure enemy is playing Drakenborg -> you draw & keep Korathi/Bearification in hand for it -> you autowin the game. Optimally you would also keep a Pellar in hand at all times in case they happen to have a defender to cover Drakenborg.
Only realistic issue is if they get lucky with Temple, they could manage to drop more than 1 Defender covering Drakenborg. Could be hard to bypass that. But if you win Round 1, you can let them spend Defenders on Round 2, then nuke Drakenborg in Round 3 immediately.
You might not have room in your deck for a Korathi, but I think at this point in the meta there is no point to not tech in Bearification in your decks, unless you are playing Devotion. It's a 5 provision card that will find use in almost any game these days. Even if enemy doesn't have any Artifacts, you can turn your used one into 10 points, which is not bad value for 5 provisions.
As an addendum, even if you have no Bearification or Korathi, it can be possible to still outhustle Drakenborg, if you play control. What helps is killing their deck boosters (Dandelion, Agent) in R1, and then focusing all your control in R2 and R3 onto Dwims. The way this deck works is it bounces off Dwims off the board to repeatedly reset the location. If you kill any Dwim the moment it hits the board, they will have plenty of useless cards in hand (Teleportation, Practice Makes Perfect, Reinforcements).
tl;dr: I think this subreddit is heavily overstating the power of this deck. Yes, it's gimmicky. Yes, if you fall for it and let it rip, there's no way to counter it and you will lose. But it's the same with other silly memedecks like Tibor Spam, Kelly, etcetera. It's easy to counter this one. Do your homework and tech your counters and play around it.