Theorylytics

Fusion Strike

Used by Caliban

Ability4
Energy25

Fusion Strike

Converge three streams of raw energy upon a single point, causing a massive explosion. The streams strip armor and shields, and each enemy struck detonates on stream convergence. Summoned Conculysts can wield their own mini Fusion Strikes.

Introduced in Update 31.0 (2021-12-15)

Ability stats

Strength
  • See in-game / wiki ability card for rank values
Duration
  • See in-game / wiki ability card for rank values
Range
  • See in-game / wiki ability card for rank values
Misc
  • Converge three streams of raw energy upon a single point, causing a massive explosion.

Info

  • Fusion Strike is Caliban’s ability 4.
  • Converge three streams of raw energy upon a single point, causing a massive explosion.
  • Use it with the rest of the kit — especially Razor Gyre, Sentient Wrath — instead of casting it in isolation.
  • Ability Strength, Duration, Range, and Efficiency each matter differently; check Mod Scaling below before dumping all four.

Tips & Tricks

  • Read the battlefield first — cast Fusion Strike when it actually solves the room, not on cooldown habit.
  • Pair Fusion Strike with movement and energy economy so you’re not stranded after a big spend.
  • On Steel Path, confirm whether Fusion Strike still carries without strip, Viral, or a squad buff.
  • If you never press 4, it’s the first Helminth candidate on Caliban.

Ability dossier · Fusion Strike

Verified 2026-07-22

Synergies

  • Fusion StrikeRazor Gyre

    Use Fusion Strike to set up Razor Gyre, or follow Razor Gyre with Fusion Strike while enemies are vulnerable.

  • Fusion StrikeSentient Wrath

    Use Fusion Strike to set up Sentient Wrath, or follow Sentient Wrath with Fusion Strike while enemies are vulnerable.

  • Fusion StrikeLethal Progeny

    Use Fusion Strike to set up Lethal Progeny, or follow Lethal Progeny with Fusion Strike while enemies are vulnerable.

Mod Scaling

Strength

Improves Fusion Strike’s damage or effect potency where Strength is listed on the ability.

Duration

Duration is low priority on Fusion Strike unless an augment or lingering effect needs it.

Range

Range is usually dumpable on Fusion Strike unless you feel the hitbox is too tight.

Efficiency

Fusion Strike costs energy each cast — Efficiency (or strong regen) keeps the loop comfortable on long missions.

Priority

Stack the stats that actually move this ability’s needle, then Efficiency for uptime.

Mission Use Cases

MissionHow to Use It
Steel Path Survival / Defense / DisruptionTest whether Fusion Strike still clears or enables clear when enemies are dense and overlevelled.
Mobile Defense / ExcavationUse Fusion Strike to control or delete the swarm on the objective, then reposition.
Exterminate / Capture Speed RunsCast Fusion Strike only when it saves time — skip it on empty tiles.
Spy / Rescue / Quiet RoutesIf Fusion Strike is loud or forces combat, save it for after the vault; if it’s stealth-friendly, use it to stay safe.

Comparisons

  • VS

    Vs similar tools on other frames — Fusion Strike is tuned for Caliban’s loop — don’t judge it as a standalone subsume without the rest of the kit.

Other Caliban abilities