https://www.fantasyflightgames.com/en/news/2015/6/19/ancient-and-forbidden/
Well the righteous card seems interesting but is it worth it...
Edited by DaisuAncient and Forbidden: Preview the New Locations and Preludes
The first thing I thought when I saw the art for that card was "OMG It's Sister Mary!" Will she be the first Investigator to be in Arkham Horror, Mansions of Madness, AND Eldritch Horror?
It's the artwork for sister Sofia, nun with a gun, from the call of cthulhu LCG.
It's not quite how I imagine sister Mary.
Yah, it's not what I imagine either for Sister Mary. It just made me laugh. Glad to know it's not her to be honest. Thanks for the clarification. 
The same artwork is used for different characters between the games. I doubt sister Sofia will appear in EH, they just borrowed her artwork.
This expansion make me a bit confused…. Is not reslly Lovecraftian stuff… I really wonna more Lovecraft lore to be honest
While the idea of a cosmic Syzygy apocalypse is not one Lovecraft wrote about, to me it perfectly fits his general theme of "humanity is but a small mote within a vast uncaring universe".