UndertowU15 PirateLiquefy
Become a water trap and drown unsuspecting enemies.
Energy Drain: 6 / 4 / 3 / 2 s-1
Strength:10 / 15 / 20 / 25
Range:7.5 / 11.25 / 15 / 18 m

  • Hydroid submerges into a pool of water with a diameter of 7.5 / 11.25 / 15 / 18 meters, becoming invulnerable to all forms of damage and untargetable by enemies. Enemies that wander onto the pool will sink and disappear from sight, taking 10 / 15 / 20 / 25 Finisher damage per second.
    • Damage is affected by Power Strength and bypasses armor and shields.
    • Diameter is affected by Power Range.
    • The relationship between diameter and Power Range is nonlinear.
    • Undertow uses the following expression when accounting for Power Range: Modified Range = Base Range × Power Range 0.5
  • Undertow drains 6 / 4 / 3 / 2 energy per second, and will remain active so long as Hydroid has energy. Undertow will end if Hydroid runs out of energy, if a movement key is held, or if deactivated by pressing the ability key again (default 3 ).
  • Hydroid's Companion will also be submerged.
  • The player will be invincible to all damage during the effects of Undertow; however, the player's companion will still be susceptible to explosions.
    • Aura effects from enemy Eximus will not apply to Hydroid while he is submerged but nearby Tenno will suffer from the effects of the Eximus unit's aura if they are in range.
      • Energy Leech Eximus still will drain energy when in the pool, however.
  • Shields will recharge during Undertow.
  • Enemy bodies will remain hidden until Hydroid emerges from the pool.
  • Allies cannot damage enemies inside the pool.
  • Items will hover above the player when vacuumed by a Sentinel, and will only be picked up when Hydroid emerges from the pool.
  • Reloading before casting Undertow will not interrupt the action and you will be able to finish reloading while in this state.
  • When Hydroid is submerged, the game treats him as invisible to enemies. As such, any kills on unalerted enemies with undertow will count as a stealth kill.
    • Also causes the Zenistar to deal bonus stealth damage to enemies.
      • There is a bug related to this where a Zenistar built with blast will continue to deal bonus damage to some enemies even when hydroid re-emerges from the puddle.

Main article: Curative Undertow

Curative Undertow is a Hydroid Warframe Augment Mod that allows Undertow to heal Hydroid and his allies within range by a percentage of their max health every 1.5 seconds. Each ally atop the pool increases Undertow's energy drain per second.

Rank Effect Cost Conclave
0 15% 6 C5
1 20% 7 C5
2 25% 8 C8
3 30% 9 C10

  • Undertow will knockdown enemies within range when they sink into the puddle. Activating then deactivating Undertow allows you to set up Ground Finisher attacks with your melee weapon on nearby enemies.
  • If you see an enemy Eximus walk into the pool, deactivate Undertow and expose them to attacks, as their Auras will remain active while submerged.
  • When running an Infested Defense (such as an uncontested Dark Sector or Orokin Derelict), stand near the cryopod or a walkway to the cryopod and activate Undertow. Once you've collected several enemies, deactivate Undertow and chain together Area of Effect skills such as Tempest Barrage and Tentacle Swarm.
  • If you are under heavy fire, activate Undertow to regenerate your shields, as well as health depending on whether your squad has a member with the Rejuvenation aura equipped.
  • Undertow is useful for gathering large numbers of enemies in one spot for another player to kill them once the ability has ended.

Maximization is a form of specialization: mods may be blended to result in values that vary between the top-end limits listed here. Click any maximized link to learn how to build it.

  • Maximized Power Duration reduces channeling cost to 0.71 energy per second.
    • Reduces diameter to 10.5 meters.
  • Maximized Power Efficiency reduces activation cost to 3.75 energy and channeling cost to 0.5 energy per second.
    • Has no negative effects on this ability.
  • Maximized Power Range increases diameter to 28.46 meters.
    • Reduces damage to 10 per second.
  • Maximized Power Strength increases damage to 87.25 per second.
    • Without Energy Conversion, increases damage to 74.75 per second.
    • Increases activation cost to 23.25 energy and channeling cost to 3.5 energy per second.

  • At times a miniature Hydroid and his sentinel can be seen on the pool.
    • When this bug occurs enemies will begin throwing grenades at the player and will be able to injure the player.
    • This bug can also rarely occur on PS4, however instead of appearing tiny you will see Hydroid's head and shoulders clip through the floor at their normal size (only when moving).
    • If Battalyst and Manic Bombard do not die after 1 minute, they are freed from Undertow.
  • Some bosses, such as General Sargas Ruk can be submerged by Undertow, making them invulnerable to outside damage by other players.

  • See alsoEdit

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