Simple heavy attack based [Quassus] build (Inspired by Ninjase)

[Berserker Fury] Flexible for rivens or Faction mods (may need Umbral Forma or use alternatives to Sacrificial Mods)
Umbral forma to use max [Galvanized Reflex] alternatively to Reflex Coil
Galvanized Reflex can also be achieved if you use Galvanized or Regular Steel flexible for Sacrificial, use Primed/Regular Pressure or trade for a Faction Mod (if you like those).

Enjoy! Geat on its own, preferred use is on a gather ability (Mag bubble/pull, [Nidus], [Cordon] [Nautilus], Vazarin, Etc), or [Mirage].