[quote=@Headless]
Heard of the first no clue on the second

Not sure about the immune to magic tho

https://tvtropes.org/pmwiki/pmwiki.php/Awesome/BlackestNight

On that page it mentions how wonder woman turns a bunch of em to ash with her lasso and that is definitely magic.
[/quote]

No, that's not. Divine/light based power which can kill Black Lanterns yes.

https://en.m.wikipedia.org/wiki/Black_Lantern_Corps

Also, here's a page on Lucifer: https://en.m.wikipedia.org/wiki/Lucifer_(DC_Comics)