I got Corvus earlier this month and love using him, but I have never been able to figure his immunity out. He does not counter coldsnap at the beginning of the fight (not sure if intended or a bug) when fighting Iceman, but when I get knocked down, it seems to show what would appear as immunity being deactivated as if he had immunity? Can anyone clear this up for me. I have read and re read his description multiple times but no mention to when or how his immunity is active.
I got beat up just to show what I am talking about.


Incase its a bug, I am on iPhone X Ios 11.3.1.