Shadowverse

It's also being boosted by the new burn rune.

I haven't seen this deck in the game yet, but I want to try it; I just need to craft two more golems. It's interesting that the deck borrows a lot from Mysteria, as it was a couple of expansions ago (Founder, Calio, Staff of Winds). I feel that the playstyle will be similar.

A bunch of swords with full boards of ones that are cleared by Substick.

Ah, then I understand; for some reason, I rarely encounter swords. And there didn't seem to be any particular problems with dragons anyway (although, most likely, these were dragons with poor draws or that weren't optimized at the beginning of the meta).

and from the two- and three-mana cards - six Hamelins and Miriam, which you get in the first turns with Fervents without generators.

Yes, I've noticed this too, but at least you can discard some cards to gain tempo and hope for a Deus draw, but what annoys me most is having a bunch of zero-mana cards in your hand in the early game. I once got so annoyed when I drew three Mechanizations and discarded one of them from the deck, and now I'm running with two.
Although, I'm a pervert and play with three Sylphs in 2019 (they say such a deck is called "aggro portal" and doesn't play Deus, but in my opinion, that's even more perverse).