This [Loki] build uses high range and duration to safely escort defense objectives across long distances, most notably Plague Star drones. There are many options for subsumed abilities depending on what your exact role is in the mission.
Resonator is chosen because it deals better than Radial Disarm against Infested. Ensnare and Larva also work but require significantly more casts. Fire Walker or Energized Munitions help you to engage bosses after escorting the objectives. Decoy can be replaced instead but it helps you to move across long distances when paired with Switch Teleport.
[Rolling Guard] and Shield Gating combine to help you deal with unavoidable damage, like an unlucky Bombard rocket aimed at a teammate.
[Corrosive Projection] and [Coaction Drift] are used to help allies deal with enemies while you're escorting the objective. Either can be replaced to suit the mission.
Arcane Velocity is primarily chosen for the [Pyrana Prime] synergy against various bosses that have special damage reductions. It can be replaced with any other arcane to suit your playstyle.
CREDIT: Build write-up originally by -NICHE- and tweaked for Helminth meta.