Fathom

Difficulty: Medium

A short-ranged assassin, Fathom can slip in and out of combat and win long engagements.

Weapon: Riptide

Weapon DPS

55.9

Sustained DPS

53.2

Bullet damage

3.6

Bullets per shot

Fire rate

2.22

Ammo

Reload

0.3s

Base stats

Health

780

Move speed

7.2

Sprint speed

1.6

Stamina

Health regen

Melee

50 / 116

Abilities

Scalding Spray

Spray scalding water in a cone ahead of you. You build up bonus weapon damage as the spray damages an enemy hero.

Cooldown 40s Charges 1 Charge Delay 8s Duration 3s Radius 12m DPS 40 ↑0.37 Weapon Damage Gain Per Sec 5 Bonus Duration 12s

Upgrades

1 AP -15s Cooldown

2 AP +2s Duration

5 AP +55 DPS

Breach

Launch forward, damaging all enemies near where you land and knocking them into the air.

Cooldown 22s Cast Range 20m Damage 80 ↑0.65

Upgrades

1 AP +3m Explosion Radius

2 AP -8s Cooldown

5 AP +120 Damage

Reefdweller Harpoon

Throw a harpoon that latches to a wall or ceiling, and pulls you in. Activates Lurker's Ambush's invisibility while being pulled in. Once hanging attached to the harpoon surface, gain additional charges. Casting Reefdweller Harpoon does not break invisibility.

Cooldown 30s Charges 2 Charge Delay 2s Cast Range 30m

Upgrades

1 AP -5s Cooldown

2 AP +5m Cast Range

5 AP After detaching, gain 30% Fire Rate for 7s or until you reload (+7s Detach Buff Duration, +30% Fire Rate)

Lurker's Ambush

Passive: While out of combat and not seen by enemies, heal a portion of your max health every second. If you stand still, you also become invisible, so long as you stay still or crouched and don't perform any actions. While completely invisible, you are invulnerable.

Cooldown 50s Channel Duration 9999s Cast Range 30m Max Health Regen 3% Fade Time 1.5s DPS 60 ↑0.65 Enemy Move Speed 40% Max Slow Duration 3.5s

Upgrades

1 AP -15s Cooldown

2 AP +1s Max Slow Duration

5 AP +2% Max Health Regen

Changed in recent builds

Build client-6698 (Sep 23, 2026)

Lurker's Ambush: Enemy Move Speed 60% → 40%

Background

A notorious monster of The Deep, Fathom enjoyed cultivating an aura of mystery and fear around him. He was content feasting on wayward sailors and demanding tithes from selkies, but then The Adversary came and ruined everything. After all, when it came to sowing terror, how could he compete with a genocidal force of nature? It wasn't fair. Something had to be done to save himself from fading into obscurity...and so he seeks to summon the Patrons to ensure that he will always be the apex predator of The Deep.