Theorylytics

Hydroid Prime

Surge Immunity

Tidal Impunity Travel

Forma
2
Playstyle
Helminth
Keep 2 · Tidal Impunity

Tidal Impunity Hydroid - wave travel with shared status immunity, then Barrage and Plunder when you land on Steel Path packs. Hydroid Prime's extra polarities cut Forma versus base Hydroid for the same polarity story.

Build dossier · Surge Immunity

2 Forma

Loadout

Aura + Exilus on top, then eight general slots in two rows of four.

Arsenal

Playstyle

Tidal Impunity — Surge for invulnerable travel and shared status immunity, Barrage / Plunder when you land.

Passive abilities

Enemies damaged by Hydroid become Deepened — further hits strip armor. Plunder spends those Deepened marks for armor and Corrosive damage for you and allies.

Active abilities

  • 1 Tempest BarrageRain explosive water. Viral Tempest adds Viral procs to the barrage.
  • 2 Tidal SurgeDash as a wave — invulnerable travel and status cleanse. Tidal Impunity shares the cleanse.
  • 3 PlunderCash Deepened marks for armor and Corrosive damage. Rousing Plunder shares loot/buff fantasy with the squad.
  • 4 Tentacle SwarmKraken tentacles hold packs. Pilfering Swarm adds loot chance on tentacle kills.
  • Augment: Tidal Impunity on Tidal Surge.

Mod breakdown

Duration / Strength

Immunity windows and Plunder / Barrage potency.

Archon shards

  • Duration
  • Strength
  • Casting Speed

Helminth

Keep Tidal Surge for the augment. Flex Tentacle Swarm for Roar on mobile tiles.

Mission Usefulness

  • Steel Path Survival / Defense / Disruption

    Strong

    Tidal Impunity cleanses and shares immunity while Barrage / Plunder still work.

  • Mobile Defense / Excavation

    Excellent

    Surge between points with status immunity.

  • Exterminate / Capture Speed Runs

    Excellent

    Wave travel deletes downtime.

  • Spy / Rescue / Nightmare

    Weak

    Loud wave — not stealth.

  • Open World / Bounties

    Excellent

    Open travel is Tidal Surge's fantasy.

  • Long-Range Gunplay / Eidolon-Style Content

    Weak

    Movement kit, not hunts.