Technical Question Regarding Destiny of Sands Part 3 [spoiler warning]

[Warhaven]

Spoiler:

In Destiny of Sands Part 3, you gain 3 mythic tiers for the duration of the adventure. The Mythic book says, " Upon reaching the 2nd mythic tier, an ability score of your choice permanently increases by 2." Emphasis mine. If the ability increase is permanent, wouldn't that mean you get to keep the stat increase regardless of losing your mythic tiers at the end of the scenario?

[Jeff Merola]

No.