Talk:Nyx (Warframe)/@comment-71.123.62.97-20131101235321/@comment-50.58.19.254-20131104141126

I've found that a combination of focus + overextended (rank 2) + streamline + fleeting expertise lowers the cost down to the base capped 25 and the focus maxed negates the detrament for the overextended so you will stay at base skill cost while essentually double stretching if you include stretch in the build. This works with pretty much every rank 4 skill and I've got the same setup on my Rhino and Nova.