Potential Investment Cost: 85 Plat (6 slot, 20 potato, 5*35/3 Formas)

Forma and replace Vile Acceleration with Primed Shred if you feel like it. Punch through helps with hordes for the synapse since it's a single-target weapon.

No Galvanized Aptitude since the corrosive procs increase the front-up damage you deal to armored enemies, and Hunter Munitions coupled with high crit chance would make the weapon consistently proc bleed. It's better to slot in fire rate. Besides, the damage will come from the arcane.

Rime Rounds instead of Primed Cryo Rounds for a more even chance to proc Corrosive and Viral, and it saves on the forma.

Good Riven Stats

200% Critical Chance (Replace [Critical Delay])
120% Critical Damage (Replace [Vital Sense])
90% Fire Rate (Replace [Vile Acceleration])
230% Multishot (Replace Galvanized Chamber)
55% Faction (Replace Bane))

• Punch Through (for hordes)
• Damage (for front-up damage)
• Heat (Reorganize, place riven at lower right slots)

Bad Riven Stats

• Viral/Cold/Elec (may mess with the status weights)
• Status Chance (you don't really need it)