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Curative Undertow is a Hydroid Warframe Augment Mod that allows Undertow130xDark.png Undertow to heal HydroidIcon272.png Hydroid and his allies within range by a percentage of their max health every 1.5 seconds.


Rank Hydroid Health Restore Ally Health Restore Cost
0 5% 15% 6
1 6% 20% 7
2 8% 25% 8
3 10% 30% 9


  • This mod can be acquired by attaining the rank of Genius under Cephalon Suda, or the rank of Flawless under New Loka, and spending ReputationBlackx64.png 25,000 to purchase.


  • Heals all Warframes, Companions, Eidolon Lures, summoned allied units such as Specters, allied Invasion units, Hostages, Kavor Defectors, Sortie and Arbitrations Defense Operatives, and Defense Objects. Heals self by 10% of max health every 1.5 seconds.
    • Healing percentages are affected by Ability Strength mods.
    • On airborne allies, such as Sentinels and Eidolon Lures, they will only be healed when Undertow is cast above them in the air.
    • On Defense Objects, Curative Undertow restores up to 100 health per 1.5 seconds.
  • Heals Hydroid and his Companion, along with normal and syndicate Specters. Note however, that the entity being healed must be touching the pool, meaning Cephalon Suda's Shield Osprey reward cannot be healed by the ability unless it is forced onto the ground long enough, which is extremely unlikely and rare to happen.
  • Cannot revive downed players.


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  • Grants Undertow a cosmetic mist effect affected by the Hydroid's energy color.


Patch History[]

Update 31.2 (2022-03-16)


As mentioned in our last Devstream, we set out to buff a selection of Augments that were underused according to our statistics. Our goal is to bring these Augments up to speed, and align them with our more popular Augments. The buffs below are merely additions onto what already exists in the game. This won’t be our only batch, so expect to see more Augment changes in the future!

Hydroid: Curative Undertow
Before: Allies can stand in the pool to regain 30% health every 1.5 seconds, increasing the energy drain on Hydroid per ally.
New: The energy drain to heal allies has been removed, and the Augment’s description has been updated to indicate that Hydroid will restore 10% Health (this was always an effect, it was just not indicated in the description).

Update 15.5 (2014-11-27)

  • Healing speed from Hydroid’s Curative Undertow Mod slowed. Also increased energy consumption from 2 to 5.

Update 15.0 (2014-10-24)

  • Introduced.