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Hydrothermic armor
  • Hydrothermic armor.png
  • Hydrothermic armor equipped (female)
Statistics
TypeArmor
Defense67/49/43/40/46
Set BonusInferno effect when below 50% life
You emit a blazing explosion when you are hit

Helm: 5% increased melee damage
Enemies are more likely to target you
Melee attacks and projectiles cause chaos flames to erupt on enemy hits

Headgear: 5% increased ranged damage
You fire a homing chaos flare when using ranged weapons every 0.33 seconds

Mask: 5% increased magic damage and 15% reduced mana usage
Magic attacks summon damaging and healing flare orbs on hit

Helmet: 40% increased minion damage and +2 max minions
Summons a hydrothermic vent to protect you

Hood: 5% increased rogue damage
Rogue weapons unleash a volley of homing flames around the player every 2.5 seconds
Rogue stealth builds while not attacking and slower while moving, up to a max of 110
Once you have built max stealth, you will be able to perform a Stealth Strike
Rogue stealth only reduces when you attack, it does not reduce while moving
The higher your rogue stealth the higher your rogue damage, crit, and movement speed
Grants BuffHydrothermic Vent (buff)Hydrothermic Vent
Buff durationInfinite (Helmet)
Buff tooltipThe hydrothermic vent will protect you
Grants BuffInfernoInferno
Buff durationInfinite (Under 50% Health)
Buff tooltipNearby enemies are ignited
Inflicts DebuffOn Fire!On Fire!
100% chance

Debuff duration4, 8, or 12 seconds (Helm melee attacks)
3 seconds (Chaos Blaze, Chaos Geysers, Chaos Flares, Chaos Orbs, Chaos Flames, Homing Chaos Flares)
Debuff tooltipSlowly losing life
Inflicts DebuffBrimstone FlamesBrimstone Flames
100% chance

Debuff duration2 seconds (Inferno)
1.5 seconds (Chaos Flares)
Debuff tooltipRapid health loss
RarityRarity Level: 8
Sell 14 Gold Coin.png 40 Silver Coin.png (set)
Projectile created
Chaos Flame
Chaos Flame
Summons Minion
Hydrothermic Vent
Hydrothermic Vent.gif

Hydrothermic armor is a craftable Hardmode armor set, crafted from Cores of Chaos, Hellstone Bars, and Scoria Bars. It requires 6 Cores of Chaos, 17 Hellstone Bars, and 32 Scoria Bars to make the whole set or 10 Cores of Chaos, 33 Hellstone Bars, and 60 Scoria Bars for a set with all five headpieces.

A full set consists of an Hydrothermic Armor and an Hydrothermic Subligar as well as five different headpieces: The Hydrothermic Mask, Hydrothermic Helmet, Hydrothermic Helm, Hydrothermic Headgear and Hydrothermic Hood. All of the helmets share the set bonus, but also each piece providing boosts to the specific class. All helmets also provide temporary immunity to lava and immunity to fire damage.

The Hydrothermic Armor gives 20 defense, +20 max life, 8% increased damage and 4% increased critical strike chance. The Hydrothermic Subligar gives 14 defense, 3% increased critical strike chance and 15% increased movement speed.

  • The Hydrothermic Helm gives 33 defense, 12% increased melee damage, 10% increased melee critical strike chance, 18% increased melee speed, and +700 to Aggro.
    Melee attacks have a 25% chance for On Fire! to be inflicted for 12 seconds, a 37.5% chance to be inflicted for 8 seconds, and a 37.5% chance to be inflicted for 4 seconds.
    Its set bonus grants an additional 5% melee damage and causes melee attacks and projectiles to spawn chaos flames on enemy hits
    • Chaos flames deal 15% damage of the attack that spawned them, and can hit up to 3 times. Further damage added to the flame after it has reached 45 damage is reduced by 90%.
    • Chaos flames are only generated from enemies that have a damage stat of 5 or higher, with the exception of enemies spawned from statues.
  • The Hydrothermic Headgear gives 15 defense, 12% increased ranged damage, 10% increased ranged critical strike chance and reduces ammo cost by 25%.
    Its set bonus grants an additional 5% ranged damage and causes ranged weapons to fire a chaos flare every 0.33 seconds that inflicts Brimstone Flames and On Fire!.
    • Chaos flares deal 25% of the damage of the attack that spawned them and are softcapped at 50 damage.
  • The Hydrothermic Mask gives 9 defense, increases maximum mana by 100, 12% increased magic damage and 10% increased magic critical strike chance.
    Its set bonus grants an additional 5% magic damage and allows magic attacks to summon healing and damaging orbs that inflict On Fire! on enemy hits.
    • Chaos orbs deal 62.5% of the damage of the attack that spawned them and are softcapped at 100 damage.
    • Healing orbs heal for 10% of the projectile's damage dealt, reduced by 5% on each repeat pierce hit.
  • The Hydrothermic Helmet gives 6 defense, 5% increased summon damage and increased minion knockback.
    Its set bonus grants an additional 40% minion damage, +2 max minions, and summons a Hydrothermic Vent to fight for the player.
    • The Hydrothermic Vent floats over the player's head and fires at enemies for 190 damage. It also inflicts On Fire!.
  • The Hydrothermic Hood gives 12 defense, 12% increased rogue damage, 10% increased rogue critical strike chance, 50% chance of not consuming rogue weapons and 5% increased movement speed.
    Its set bonus grants an additional 5% rogue damage, gives rogue weapons the ability to spawn 8 chaos flames every 2.5 seconds that home in on enemies and inflict On Fire!, and gives a maximum rogue stealth of 110.
    • Homing chaos flames deal 50% of the damage of the attack that spawned them and are softcapped at 100 damage.

All helmets also provide the set bonus of giving a modified Inferno effect when below 50% health and to cause a fiery explosion on hit that inflicts On Fire!. The modified Inferno effect inflict nearby enemies with Brimstone Flames and deal 50 damage.

A full set always provides a minimum of 40 defense, +20 max life, 8% increased damage, 9% increased critical strike chance and 10% increased movement speed, temporary immunity to lava, immunity to fire damage, an Inferno effect when below 50% health, and a fiery explosion on hit that deals 100 damage.

Set

Hydrothermic Armor
  • Hydrothermic Armor.png
Statistics
TypeArmor
Defense20
Body slotShirt
Tooltip+20 max life
8% increased damage and 4% increased critical strike chance
Sell 4 Gold Coin.png 80 Silver Coin.png
Hydrothermic Subligar
  • Hydrothermic Subligar.png
Statistics
TypeArmor
Defense14
Body slotPants
Tooltip5% increased critical strike chance
10% increased movement speed
Sell 3 Gold Coin.png 60 Silver Coin.png

Helmet variants

Hydrothermic Helm
  • Hydrothermic Helm.png
Statistics
TypeArmor
Defense33
Body slotHelmet
Tooltip12% increased melee damage and 10% increased melee critical strike chance
18% increased melee speed
Melee attacks and melee projectiles inflict on fire
Temporary immunity to lava and immunity to fire damage
Sell 6 Gold Coin.png
Hydrothermic Headgear
  • Hydrothermic Headgear.png
Statistics
TypeArmor
Defense15
Body slotHelmet
Tooltip12% increased ranged damage and 10% increased ranged critical strike chance
Reduces ammo cost by 25%, temporary immunity to lava and immunity to fire damage
Sell 6 Gold Coin.png
Hydrothermic Mask
  • Hydrothermic Mask.png
Statistics
TypeArmor
Defense9
Body slotHelmet
Tooltip12% increased magic damage, +100 max mana, and 10% increased magic critical strike chance
Temporary immunity to lava and immunity to fire damage
Sell 6 Gold Coin.png
Hydrothermic Helmet
  • Hydrothermic Helmet.png
Statistics
TypeArmor
Defense6
Body slotHelmet
Tooltip5% increased minion damage and increased minion knockback
Temporary immunity to lava and immunity to fire damage
Sell 6 Gold Coin.png
Hydrothermic Hood
  • Hydrothermic Hood.png
Statistics
TypeArmor
Defense12
Body slotHelmet
Tooltip12% increased rogue damage and 10% increased rogue critical strike chance
50% chance to not consume rogue items and 5% increased movement speed
Temporary immunity to lava and immunity to fire damage
Sell 6 Gold Coin.png

Crafting

Recipe

Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar15
Hellstone BarHellstone Bar8
Core of ChaosCore of Chaos3
Result
Hydrothermic ArmorHydrothermic Armor1
Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar7
Hellstone BarHellstone Bar4
Core of ChaosCore of Chaos1
Result
Hydrothermic HeadgearHydrothermic Headgear1
Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar7
Hellstone BarHellstone Bar4
Core of ChaosCore of Chaos1
Result
Hydrothermic HelmHydrothermic Helm1
Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar7
Hellstone BarHellstone Bar4
Core of ChaosCore of Chaos1
Result
Hydrothermic HelmetHydrothermic Helmet1
Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar7
Hellstone BarHellstone Bar4
Core of ChaosCore of Chaos1
Result
Hydrothermic HoodHydrothermic Hood1
Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar7
Hellstone BarHellstone Bar4
Core of ChaosCore of Chaos1
Result
Hydrothermic MaskHydrothermic Mask1
Crafting Station
Mythril AnvilMythril Anvil
or
Orichalcum AnvilOrichalcum Anvil
Ingredient(s)Amount
Scoria BarScoria Bar10
Hellstone BarHellstone Bar5
Core of ChaosCore of Chaos2
Result
Hydrothermic SubligarHydrothermic Subligar1

Trivia

  • Hydrothermic armor used to be known as "Ataxia armor", in reference to the term Ataxia, which is the name given to medical symptoms that consist of diminished control of muscle movements.
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