Player who have 9 Match Points or more in a PAX Online MTG Arena Format Prelim receive an invite to Sunday, September 20th’s PAX Online MTG Arena Championship.
If you play in that Championship you will receive an invite to October’s Zendikar Rising Qualifier. This means that you will not have to grind the Constructed or Limited September 2020 Ladders and be part of the Top 1,200 players on MTG Arena to get the invite.
Wizards of the Coast will send you an email closer to the event detailing more information. Details about Zendikar Rising Qualifier Weekends can be found at https://magic.gg/events/qualifier-weekend