Radial Howl

Ability2

Energy25

Radial Howl

Let out ferocious howl that stuns nearby enemies and causes Sentients to shed any built up resistances.

Introduced in Update 23.0 (2018-06-15)

Strength

Duration

Range

Misc

Let out ferocious howl that stuns nearby enemies and causes Sentients to shed any built up resistances.

Info

Radial Howl is Excalibur Umbra’s ability 2.
Let out ferocious howl that stuns nearby enemies and causes Sentients to shed any built up resistances.
Use it with the rest of the kit — especially Slash Dash, Radial Javelin — instead of casting it in isolation.
Ability Strength, Duration, Range, and Efficiency each matter differently; check Mod Scaling below before dumping all four.

Read the battlefield first — cast Radial Howl when it actually solves the room, not on cooldown habit.
Pair Radial Howl with movement and energy economy so you’re not stranded after a big spend.
On Steel Path, confirm whether Radial Howl still carries without strip, Viral, or a squad buff.
If you never press 2, it’s the first Helminth candidate on Excalibur Umbra.

Ability dossier · Radial Howl

Verified 2026-07-22

Radial HowlSlash Dash
Use Radial Howl to set up Slash Dash, or follow Slash Dash with Radial Howl while enemies are vulnerable.
Radial HowlRadial Javelin
Use Radial Howl to set up Radial Javelin, or follow Radial Javelin with Radial Howl while enemies are vulnerable.
Radial HowlExalted Blade
Use Radial Howl to set up Exalted Blade, or follow Exalted Blade with Radial Howl while enemies are vulnerable.

Strength: Strength matters if Radial Howl scales effect power; otherwise dump it for other stats.
Duration: Duration is low priority on Radial Howl unless an augment or lingering effect needs it.
Range: Increases Radial Howl’s reach, radius, or targeting distance.
Efficiency: Radial Howl costs energy each cast — Efficiency (or strong regen) keeps the loop comfortable on long missions.

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

Mission	How to Use It
Steel Path Survival / Defense / Disruption	Test whether Radial Howl still clears or enables clear when enemies are dense and overlevelled.
Mobile Defense / Excavation	Use Radial Howl to control or delete the swarm on the objective, then reposition.
Exterminate / Capture Speed Runs	Cast Radial Howl only when it saves time — skip it on empty tiles.
Spy / Rescue / Quiet Routes	If Radial Howl is loud or forces combat, save it for after the vault; if it’s stealth-friendly, use it to stay safe.

VS
Vs similar tools on other frames — Radial Howl is tuned for Excalibur Umbra’s loop — don’t judge it as a standalone subsume without the rest of the kit.