I'm having a bit of an argument between my friend and I. If I want to use outwit or perplex, both powers that require a CLEAR LINE OF SIGHT does this mean that hindering terrain blocks sight? If I wanted to use deathstroke to outwit wonder woman's impervious but there is a bush between them, could I still outwit her?

Yes, you can! Outwit the bejeezus out of her!

You've made me a very happy man! :-) thanks

Hindering terrain blocks line of sight ONLY if the target figure has stealth.