This weapon is chosen for it's infinite combo duration and the ability to use [Combo Fury] and [Mark Of The Beast] to buff [Pyrana Prime]. These mods synergize well with the [Pyrana Prime]'s stats and gimmick. Building up these mods to benefit the secondary will also build stacks for Secondary Dexterity. I did not slot attack speed as [Wisp] is a staple Warframe for Plague Star runs.