It's hard to say. I saw someone playing it on stream, and the results varied because it was a cross of someone learning the deck and everyone else learning it exists. What I will say though is that the deck looks resilient to most of the common grave hates because 1) there's a good chance you can go off faster than the hate can get you and 2) Hogaak is still fairly easy to cast if it's stuck in your hand and forced to convoke it out.Quote from Lectrys »Our first MTGO Modern Challenge with Modern Horizons cards is in the books, and it's got a truly scary 10 Bridgevine decks with Altar of Dementia and Hogaak, Arisen Necropolis in its Top 32 (including 3 copies in the Top 8 and a notable 2nd place). How much will this deck affect the meta? Will it push out Dredge? Will it drive everyone and their dog to run UR Phoenix.meta levels of maindeck graveyard hate? What decks will prey on it? Maybe Neoform Grishoalbrand, for example, with its faster clock and ability to dodge Turn 1 targeted discard by comboing on Turn 1?
My musings: I suspect that Leyline of the Void to pick up visibility as I saw the deck just outpace double Relic of Progenitus in a match. The deck also struggles against Chalice on one, so I suspect that Chalice to at the least not go anywhere; it could pick up more visibility as well.
As for the deck itself, I wouldn't be surprised if thanks to how Convoke and Delve are worded that they pay for card costs, if Bridgevine starts picking up Trinisphere because of how surprising much of the deck can ignore Trinisphere altogether. Casting a Hogaak, Arisen Necropolis for 0 mana and then having a judge have to explain "why, yes that indeed works", seems like a fun way to win a game postboard.