Sheev Riven

[MrTunio]

Hello everybody I got a Riven mod and I have no idea how many it cost and how to get this weapon. 
It's Sheev Plecti-Utitis 
+82.8% channeling efficiency

+76.4% critical damage

Slide atack have +87.2% chance to be a critical hit

[GnarlsDarkley]

I'm Not into Riven so no idea about the value.

The Sheev is an Invasion reward if you side with the grineer for the respective parts

[Xarteros]

It's a dagger. Daggers are either already good enough because of Covert Lethality (makes extra damage, crit, status etc irrelevant) or not really all that good. Sheev, as far as daggers go, isn't too bad, but IMO they aren't as useful as other melee weapons outside of stealth kills.

That said, Melee reach, channeling efficiency and attack speed can all still help with a Covert Lethality build, but that could be an infinite amount of rerolls

[Foreigndevil]

I think you mean "The Senate" Riven