This build is focused on long ability duration (eg. stealth) and fast movement speed. It doesn't require any forma, except Orokin Reactor and good choice for beginners until they don't have [Loki Prime] and don't wish to invest formas in this vanilla warframe.
Sort of cloaked and agile ninja getting around everywhere fast. I used it doing mastery rank 23 test as still had no [Loki Prime], so needed some fast and cheap solution, but after this I started to enjoy with it. I discovered that it pretty useful for full time stealth operations during gameplay. Sort of killing everyone with finishers and so on. Sometimes some Rivens requires this too.