Hydrosphere

HydrosphereSpell, AoE, Duration, Cold, Orb, Lightning, Physical
Level: (1-20)
Cost: (12-20) Mana
Cast Time: 0.60 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: 110%Requires Level 34Create a sphere of water, or move an existing sphere and reset its duration. The sphere continually applies a drenched debuff with a short duration to enemies in its area or those it moves through. You can hit the sphere with other skills to inflict Cold and Lightning Ailments (other than Chill). The sphere pulses when created, at regular intervals while afflicted by an Ailment, and after moving, damaging all drenched enemies in a large area.Deals (37-510) to (56-765) Physical Damage
Base duration is 8 seconds
Base secondary duration is 4 seconds
Pulses every 0.4 seconds while Frozen, Shocked, Brittle or Sapped
100% of Physical Damage Converted to Cold Damage
Can only be Hit once every 1 second
Drenched Enemies have Cold and Lightning Exposure, applying -10% to Resistances
100% of Physical Damage Converted to Cold Damage while Sphere has no Ailments
100% of Physical Damage Converted to Lightning Damage while sphere is Shocked or Sapped
100% of Physical Damage Converted to Cold Damage while Sphere is Frozen or Brittle

Additional Effects From 1-20% Quality:
0.5% increased Pulse Frequency0.5% increased Cast Speed0.5% increased Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Acquisition
Drop level: 34Vendor Offer
1x Scroll FragmentMetadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemHydrosphere

Hydrosphere is a skill gem that creates a sphere of water, or moves an existing sphere and resets its duration. The sphere continually applies a drenched debuff with a short duration to enemies in its area or those it moves through. You can hit the sphere with other skills to inflict cold and lightning ailments (other than chill). The sphere pulses at regular intervals while afflicted by an ailment, and after moving, damaging all drenched enemies in a large area with that ailment. It is classified as an Intelligence Skill Gem.

Skill functions

Conversion

The gem's advanced description specifies (If both conversions apply, each will convert 50%). In other words, if affected by both a Cold (excluding Chill) and Lightning Ailment, it will convert its Physical damage to 50% Cold and 50% Lightning damage.

You can only have one Hydrosphere at a time; whenever you recast the skill, it will either cause the sphere to pulse and refresh its duration in the same location, or the existing hydrosphere moves to the targeted location without pulsing and the duration is refreshed. Refreshing or moving the hydrosphere will not affect the pulsing behaviour from inflicting an ailment on it.

Critical strike

• Critical Strike: Because Hydrosphere is only a single spell, its critical strike chance is only rolled once. If it crits, the first hit including every pulse after will be a critical strike. If it doesn't crit, none of them will be.

Repeat

When Echoed, the placement of the sphere will be repeated, but the pulses will always count as a final repeat, making it synergize well with Plume of PursuitPlume of Pursuit
Bone CircletEnergy Shield: (64-92)Requires Level 64, 73 Int(30-20)% reduced Cast Speed
(80-130)% increased Energy Shield
Non-critical strikes deal 80% less Damage
Spell Skills always deal Critical Strikes on final Repeat
Spell Skills cannot deal Critical Strikes except on final RepeatA dance as old as time..

On-hit mechanics

Skills that hit enemies can also hit the hydrosphere. This can happen even when no enemies are around. The hydrosphere itself cannot be directly targeted, so skills that require a specific target (e.g. Flicker Strike) and are not merely cast at a location will typically not work with Hydrosphere.

A Hydrosphere is considered a solid entity; it can block narrow passageways or bridges unless an entity has Phasing or can blink over small obstacles. Projectiles that hit a Hydrosphere will consume a hit and cause any relevant projectile behaviours to occur. It has a hit internal cooldown of 1 second that cannot be modified by increased cooldown recovery rate.

Skill interactions

Brands: Brands cannot attach to hydrosphere. Activations of brands attached to other creatures can hit the hydrosphere.

Chain HookChain HookAttack, AoE, Movement, Melee
Level: (1-20)
Cost: 8 Mana
Attack Speed: 120% of base
Attack Damage: (115-169)% of base
Effectiveness of Added Damage: (115-169)%Requires Level 12When used at range, throws out a chain, pulling you to the enemy hit dealing damage in an area behind them. When close to the enemy, just causes the area damage directly. Requires a One Handed Mace, Sceptre, Sword or Axe.+0.1 metres to Radius per 5 Rage
Gain 1 Rage if this Skill Hits any Enemies

Additional Effects From 1-20% Quality:
Gain +(0.05-1) Rage if this Skill Hits any EnemiesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.: Grants Rage when hitting the hydrosphere. At a sufficient distance, Chain Hook will pull the player towards the hydrosphere.

Chaining skills: Skills can chain off the hydrosphere on their first hit. They will not chain from the enemies to the hydrosphere.

Curses: Hydrosphere cannot be affected by hexes or marks. However, since Hydrosphere itself does hit with its pulses, it can be used to curse on hit when linked with Hextouch Support.

Explosive ArrowExplosive ArrowAttack, Projectile, AoE, Duration, Fire, Bow
Level: (1-20)
Cost: (8-10) Mana
Projectile Speed: 3260
AoE Radius: 15Requires Level 28Fires an arrow which will stick into an enemy or wall, and then explode, dealing area damage around it, either after a duration or when the maximum number of arrows stuck to that target is reached. If an enemy has multiple Explosive Arrows stuck in them, the first one to explode will consume the others, adding their damage to its explosion.Base duration is 1.00 seconds
Explosion deals 50% less Base Damage
Explosion will have (47-522) to (71-783) added Fire Damage
+0.2 metres to Explosion Radius per Explosive Arrow on Target, up to a maximum of +1.2 metres
Explosion deals 6% more Damage with Hits per Explosive Arrow on Target
Explosion deals 3% more Damage with Ailments per Explosive Arrow on Target
Maximum 20 Explosive Arrows stuck in an Enemy

Additional Effects From 1-20% Quality:
+(0.1-2) Maximum Explosive Arrows stuck in an EnemyPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.: Explosive Arrows can stick into a hydrosphere and will explode as expected.

FrenzyFrenzyAttack, Projectile, Melee, Strike, Bow
Level: (1-20)
Cost: 10 Mana
Attack Damage: (115-135)% of base
Effectiveness of Added Damage: (115-135)%Requires Level 16Performs an attack that gives the character a frenzy charge if it hits. Frenzy charges increase your attack speed.5% more Attack Damage per Frenzy Charge
5% more Attack Speed per Frenzy Charge

Additional Effects From 1-20% Quality:
+(0.1-2)% more Attack Damage per Frenzy Charge
+(0.1-2)% more Attack Speed per Frenzy ChargePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.: Grants frenzy charge when hitting the hydrosphere.

Herald of ThunderHerald of ThunderSpell, AoE, Duration, Lightning, Herald
Level: (1-20)
Reservation: 25% Mana
Cooldown Time: 1.00 sec
Can Store 1 Use(s)
Cast Time: Instant
AoE Radius: 32Requires Level 16Grants a buff which adds lightning damage to spells and attacks. If you kill a shocked enemy, this skill will create a storm, causing lightning bolts to strike enemies around you for a duration. The damage inflicted by this skill is not affected by modifiers to spell damage.Deals (1-23) to (31-1108) Lightning Damage
Cannot inflict Shock
Base duration is 6.00 seconds
Storm Hits an Enemy every 0.25 Seconds
Creates a storm when you Kill a Shocked Enemy
Buff grants (2-19) to (7-76) Added Attack Lightning Damage
Buff grants (2-19) to (7-76) Added Spell Lightning Damage

Additional Effects From 1-20% Quality:
Storms Hit Enemies with (1-20)% increased FrequencyPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.: Lightning strikes will target the hydrosphere but since it cannot shock, it would need to be able to inflict another valid ailment to make it pulse.

Strike skills: When combined with skills that deal area of effect damage, such as Molten StrikeMolten StrikeAttack, Projectile, AoE, Melee, Strike, Fire
Level: (1-20)
Cost: 6 Mana
Attack Damage: (110-185)% of base
Effectiveness of Added Damage: (110-185)%
Projectile Speed: 750Infuses your melee weapon with molten energies to attack with physical and fire damage. This attack causes balls of molten magma to launch forth from the enemies you hit, divided amongst all enemies hit by the strike. These will deal area attack damage to enemies where they land.(2-75) to (3-113) Added Fire Damage
Fires 4 Projectiles
60% of Physical Damage Converted to Fire Damage
+(0.2-0.6) metres to Melee Strike Range
Projectiles deal 50% less Damage with Hits and Ailments

Additional Effects From 1-20% Quality:
Projectiles deal (0.5-10)% more Damage with Hits and AilmentsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. or skills supported by Melee Splash SupportMelee Splash SupportSupport, Melee, Attack, Strike, AoE
Icon: S
Level: (1-20)
Cost & Reservation Multiplier: 130%
AoE Radius: 14Requires Level 8Supports melee strike skills, causing their melee strike to deal splash damage around each target hit.Supported Skills deal Splash Damage to surrounding targets
Supported Skills deal 40% less Splash Damage to surrounding targets
Supported Skills have (0-57)% more Melee Splash Area of Effect

Additional Effects From 1-20% Quality:
Supported Skills have (0.5-10)% increased Area of EffectThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket., these extra strikes can cause an area of effect overlap back onto the primary target that may increase single target DPS. However, after the addition of a 1 second hit internal cooldown, this may no longer be an effective strategy.

Elemental proliferation: When linked with Elemental Proliferation SupportElemental Proliferation SupportCold, Fire, Lightning, Support, AoE
Icon: S
Level: (1-20)
Cost & Reservation Multiplier: 110%Supports any skill that hits enemies, or could otherwise apply elemental ailments.(0-19)% increased Duration of Elemental Ailments on Enemies
Elemental Ailments inflicted by Supported Skills spread to other enemies within (1.2-1.5) metres
Supported Skills have 20% chance to Freeze, Shock and Ignite

Additional Effects From 1-20% Quality:
(0.5-10)% increased Duration of Elemental Ailments on EnemiesThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket. or similarly given a source of proliferation, the orb will proliferate ailments on itself to nearby enemies. The emitted proliferation aura moves with the orb as it moves.

Reflected Ailments

Maligaro's RestraintMaligaro's Restraint
Chain BeltRequires Level 44+(9-20) to maximum Energy ShieldAdds 1 to (30-50) Lightning Damage to Attacks
100% increased Shock Duration on you
Shocks you cause are reflected back to you
60% increased Damage while Shocked
15% increased Movement Speed while Shocked"Our genius will pave the way forward.
May all who are worthy be improved!"
- Inquisitor Maligaro: Shocking hydrosphere reflects the same shock on the player.

The FulcrumThe Fulcrum
Ezomyte StaffWarstaff
Physical Damage: (127.2-148.4) to (384-448)
Critical Strike Chance: 7.30%
Attacks per Second: 1.25
Weapon Range: 1.3 metresRequires Level 60, 113 Str, 113 Int+20% Chance to Block Attack Damage while wielding a Staff(140-180)% increased Physical Damage
(0-50)% of Physical Damage Converted to Fire Damage
(0-50)% of Physical Damage Converted to Cold Damage
(0-50)% of Physical Damage Converted to Lightning Damage
Elemental Ailments you inflict are Reflected to you
Elemental Damage with Hits is Lucky while you are Shocked
Damage Penetrates (8-10)% Elemental Resistances while you are Chilled
Gain (30-40)% of Physical Damage as Extra Damage of a random Element while you are IgnitedTo stand at the confluence of the elements,
the master must achieve perfect balance.: All Cold and Lightning ailments applied to hydrosphere reflect to the player.

Gem level progression

Level			Mana Cost	Physical Damage	Exp.	Total Exp.
1	34	79	12	37 to 56	0	0
2	36	83	12	43 to 65	252595	252595
3	38	88	13	51 to 76	314394	566989
4	40	92	13	59 to 88	388734	955723
5	42	96	14	69 to 103	477437	1433160
6	44	100	14	80 to 120	583786	2016946
7	46	104	15	93 to 139	710359	2727305
8	48	109	15	107 to 161	1355511	4082816
9	50	113	15	124 to 186	1138877	5221693
10	52	117	16	144 to 215	1368233	6589926
11	54	121	16	166 to 249	1638338	8228264
12	56	125	17	191 to 287	1956648	10184912
13	58	130	17	221 to 331	3655184	13840096
14	60	134	18	254 to 381	3017327	16857423
15	62	138	18	293 to 439	3576232	20433655
16	64	142	18	337 to 505	9164731	29598386
17	66	146	19	387 to 580	17861428	47459814
18	68	151	19	444 to 666	46032386	93492200
19	69	153	20	476 to 714	87248039	180740239
20	70	155	20	510 to 765	157972052	338712291
21	72	159	20	585 to 877	N/A	N/A
22	74	N/A	21	670 to 1006	N/A	N/A
23	76	N/A	21	768 to 1152	N/A	N/A
24	78	N/A	21	879 to 1319	N/A	N/A
25	80	N/A	22	1006 to 1510	N/A	N/A
26	82	N/A	22	1151 to 1727	N/A	N/A
27	84	N/A	23	1316 to 1974	N/A	N/A
28	86	N/A	23	1504 to 2256	N/A	N/A
29	88	N/A	24	1718 to 2577	N/A	N/A
30	90	N/A	24	1962 to 2943	N/A	N/A
31	91	N/A	24	2096 to 3144	N/A	N/A
32	92	N/A	25	2239 to 3359	N/A	N/A
33	93	N/A	25	2392 to 3588	N/A	N/A
34	94	N/A	25	2555 to 3832	N/A	N/A
35	95	N/A	25	2729 to 4093	N/A	N/A
36	96	N/A	25	2914 to 4371	N/A	N/A
37	97	N/A	26	3111 to 4667	N/A	N/A
38	98	N/A	26	3322 to 4983	N/A	N/A
39	99	N/A	26	3547 to 5320	N/A	N/A
40	100	N/A	26	3786 to 5679	N/A	N/A

Gem quality

Type	Additional Effects per 1-20% Quality	Weight
Superior	+(0.5-10)% increased Pulse Frequency	1

Item acquisition

Hydrosphere can drop anywhere.

Recipes

Hydrosphere can be created from the following recipes:

Amount	Part	Description	Meta
13	The CataclysmThe Cataclysm13Level 21 Spell Gem CorruptedThe mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all.	Random corrupted level 21 Spell gem	A
6	The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox." - Ezomyte Proverb	Random level 20 gem	A
3	Gemcutter's PromiseGemcutter's Promise3Gem Quality: +20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter	Random gem with 20% quality	A
1	Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.	Random gem with 1–20% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

Quest reward

This item is given as a quest reward for the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
Breaking the Seal Act 4	✓	✗	✗	✗	✗	✓	✗

Vendor reward

This item can be bought at the listed NPC vendors, after completing the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
Breaking the Seal Act 4 Petarus and Vanja	✓	✓	✗	✗	✗	✓	✓
Fallen from Grace Act 6 Lilly Roth	✓

Related helmet enchantments

The following helmet enchantments affect Hydrosphere.

Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Hydrosphere Damage 1	66	Merciless Labyrinth	Hydrosphere deals 25% increased Damage	helmet 100
Enchantment Hydrosphere Damage 2	75	Eternal Labyrinth	Hydrosphere deals 40% increased Damage	helmet 100
Enchantment Hydrosphere Exposure Amount 1	66	Merciless Labyrinth	Enemies Drenched by Hydrosphere have Cold and Lightning Exposure, applying -4% to Resistances	helmet 100
Enchantment Hydrosphere Exposure Amount 2	75	Eternal Labyrinth	Enemies Drenched by Hydrosphere have Cold and Lightning Exposure, applying -6% to Resistances	helmet 100
Enchantment Hydrosphere Pulse Frequency 1	66	Merciless Labyrinth	Hydrosphere has 20% increased Pulse Frequency	helmet 100
Enchantment Hydrosphere Pulse Frequency 2	75	Eternal Labyrinth	Hydrosphere has 30% increased Pulse Frequency	helmet 100

Version history

Version	Changes
3.19.0	Hydrosphere can only be hit by the entity that cast it.
3.17.0	Hydrosphere now deals 37 to 56 Physical Damage at gem level 1 (unchanged), up to 510 to 765 at gem level 20 (previously 356 to 533). Now has 110% Effectiveness of Added Damage at all gem levels (previously 80%). Changed Hydrosphere to have a one second cooldown before it can be hit again. This maintains the ailment mechanic on Hydrosphere to still allow for some special skill interactions but is no longer such a significant single target damage multiplier for so many skills.
3.13.1e	Fixed a bug where Hydrospheres couldn't be Shocked or Frozen when using Elemental HitElemental HitAttack, Projectile, Melee, Strike, Fire, Cold, Lightning, AoE, Prismatic, Bow Level: (1-20) Cost: (7-11) Mana AoE Radius: 10Requires Level 12Each attack with this skill will choose an element at random, and will only be able to deal damage of that element. If the attack hits an enemy, it will deal damage in an area around them, with the radius being larger if that enemy is suffering from an ailment of the chosen element. It will avoid choosing the same element twice in a row.(18-391) to (33-726) Added Cold Damage (22-480) to (40-891) Added Fire Damage (3-75) to (67-1467) Added Lightning Damage Only Deals Damage of the chosen Element Deals no Damage of other Damage Types (30-49)% chance to Freeze, Shock and Ignite Base radius is 1 metre 80% more Area Radius against Enemies affected by an Ailment of the chosen Element 10% more Damage per Elemental Ailment on the Enemy Additional Effects From 1-20% Quality: +(0.25-5)% more Damage per Elemental Ailment on the EnemyPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. as a Ranged skill.
3.13.0	Introduced to the game.