This build only works in high density, if your in lower level content swap fiber for [Primed Flow]
This is a primary weapon focused build however a max stacked virulence will do competitive damage to anything under steel patch heavies. Large energy pool is completely unnecessary on this frame because your 3 and 4 are no energy cost, the 2 is cheap and the one is essentially free. You must use your 1 carefully though only spam it when mobs are grouped in your Larva(2). As long as you hit 5 enemies with your 1 every 23 seconds you will have perma 349% Primary weapon crit chance bonus which is absolutely insane. Most likely will forma exilus and add [Growing Power] for even higher stats but have not gotten that far yet still testing this.

[Teeming Virulence]:
349% Critical chance bonus
23.25s Duration

Parasitic Link:
+72.75% Ability Strength multiplier
90.00% Damage redirection
93.00s Duration
76.00m Ally link
38.00m Enemy link

Ravenous:
58.20/s Health
62.00s Duration
7.60m Explosion radius

Larva:
10.85s Duration
22.80m Range
38.75 Energy