Talk:Corvo Attano/@comment-108.33.55.151-20140517014741/@comment-16533050-20140517024210

Honestly, it seems to be a general (though not absolute) conveyance of the supernatural gifts altogether.

Daud admits he is resistant to some toxin and poisons (including sleep darts), Granny Rags is obviously immune to her 'little birdies' (rats), and even Delilah Copperspoon lives in a fetid swamp area with nary a care for catching disease.

In fact the only individual gifted with the Mark who didn't seem immune to the effects of the plague was the unnamed boy in the Tales of Dunwall series.