The best players from the first round will subsequently play off against one another in fixed qualification tournaments for the HEX Invitational. Requirements for participation include a qualifying deck, which includes the starter decks, and 10 Qualifying Tickets. Players surviving this knock-out phase will then travel to the USA for the grand offline final to determine the ultimate winner of the tournament.
The tournament will employ the Swiss system and then a knock-out, single-elimination format to select finalists to compete at the offline finals in California and their $100,000 prize pool.
The official tourney vid is below.
https://www.youtube.com/watch?v=TDn58zg6ukI
Source: HEX press release, official tourney site