8th Ed. death spells and look out sirs?

do you get LOS on death spells. ie spirit leech etc

 

You only get "look our sir" from templates, or something that specifically allows "look out sir". Death snipes are not templates and make no mention of "look our sir", thus the rule does not apply.
You do get "look our sir" against Purple Sun, because it is a template.

 

cool although ive heard some people say purple sun is no saves of anykind and lookout sir is a save. which is correct?

 

purple sun is a template, meaning he gets Look out sir roll =)