Icestorm

Name	Icestorm
Skill Id	IcestormUniqueStaff12
Icon
Cast Time	0.75 sec
Level Req.	1
Critical Strike Chance	6%
Cost	22 Mana
Attack Speed	100% of base
Attack Damage	100% of base
Effectiveness of Added Damage	60%
Soul Gain Prevention	0 sec
Icy bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies and chilling them, as well as causing patches of chilled ground. Skill damage is based on Intelligence.
Deals 2 to 4 base Cold Damage per 10 Intelligence Base duration is 1 seconds One impact every 0.2 seconds 0.1 seconds additional Base Duration per 100 Intelligence Maximum 5 Icestorms at a time

Icestorm is a cold spell only available through The Whispering IceThe Whispering Ice
Vile StaffWarstaff
Quality: +20%
Physical Damage: 49.2-91.2
Critical Strike Chance: 6.10%
Attacks per Second: 1.30
Weapon Range: 13Requires Level 33, 59 Str, 59 Int+18% Chance to Block Attack Damage while wielding a Staff+1 to Level of Socketed Support Gems
Grants Level 1 Icestorm Skill
Plays Whispering Ice sound on killing a rare Monster (Hidden)
(14-18)% increased Intelligence
(8-12)% increased Cast Speed
1% increased Spell Damage per 10 IntelligenceGuard your darkest thoughts well, for they are
the cracks through which the Nightmare crawls..

Skill functions and interactions

Support Gems: As with Jaws of AgonyJaws of Agony
Supreme Spiked ShieldQuality: +20%
Chance to Block: 24%
Evasion: 290
Energy Shield: 56
Movement Speed: -3%Requires Level 70, 85 Dex, 85 Int4% chance to Dodge Spell HitsGrants Level 25 Bear Trap Skill
(18-28)% increased Trap Damage
(15-25)% increased Global Physical Damage
+(60-80) to maximum Life
-(18-14) Physical Damage taken from Attack Hits
25% chance to gain a Power Charge when you Throw a TrapOne wrong step triggers destruction.
Agony slowly dominates the will to live., support gems do not have to be linked together in order to apply to the innate skill Icestorm. This means that an unlinked six-socket The Whispering Ice is just as effective for modifying the effect of Icestorm as a six-linked The Whispering Ice.

Empower/Enhance/Enlighten: Due to Icestorm being an innate property on The Whispering Ice, Empower SupportEmpower SupportSupport
Icon: +
Level: (1-3)
Cost & Reservation Multiplier: 140%Supports any skill gem. Once this gem reaches level 2 or above, will raise the level of supported gems. Cannot support skills that don't come from gems.Per 1% Quality:1Superior2AnomalousThis Gem gains 5% increased Experience3% reduced Strength Requirement+(0-2) to Level of Supported Active Skill GemsThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket., Enhance SupportEnhance SupportSupport
Icon: +
Level: (1-3)
Cost & Reservation Multiplier: 120%Supports any skill gem. Once this gem reaches level 2 or above, will raise the quality of supported gems. Cannot support skills that don't come from gems.Per 1% Quality:1Superior2AnomalousThis Gem gains 5% increased Experience3% reduced Dexterity Requirement+(0-16)% to Quality of Supported Active Skill GemsThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket., and Enlighten SupportEnlighten SupportSupport
Icon: +
Level: (1-3)Supports any skill gem. Once this gem reaches level 2 or above, will apply a mana multiplier to supported gems. Cannot support skills that don't come from gems.Per 1% Quality:1Superior2AnomalousThis Gem gains 5% increased Experience3% reduced Intelligence RequirementThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket. do not affect Icestorm.

Totem, Mine, Trap: Icestorm can be supported by Spell Totem SupportSpell Totem SupportSupport, Spell, Totem
Icon: T
Level: (1-20)
Cost & Reservation Multiplier: 200%Requires Level 8Supports spell skills that are not triggered. Instead of casting that spell, you will summon a totem that casts the spell for you.Per 1% Quality:1Superior2Anomalous3Divergent1% increased Totem Placement speed1% increased Totem Duration1% increased Totem RangeSupported Skills will summon a Totem which uses that Skill
Totem lasts 8 seconds
Supported Skills deal (28-24)% less Damage
Spells Cast by Totem have 40% less Cast SpeedThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket., Trap SupportTrap SupportSupport, Trap
Icon: T
Level: (1-20)
Cost & Reservation Multiplier: 120%Requires Level 8Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a trap that will use the skill for you when an enemy walks near it. Traps cannot use channelling skills.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills have 0.5% increased Trap Throwing SpeedSupported Skills deal 0.5% increased DamageSupported Skills have 1% increased Trap Trigger Area of EffectTrap lasts 4 seconds
Supported Attack Skills cannot be used with Melee Weapons
Supported Skills have (0-19)% increased Trap Throwing Speed
Supported Skills deal (0-38)% increased Trap DamageThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket., Blastchain Mine SupportBlastchain Mine SupportSupport, Mine
Icon: Y
Level: (1-20)
Cost & Reservation Multiplier: 50%Requires Level 8Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a mine that will use the skill for you when you detonate it. Mines cannot use channelling skills.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills have 0.5% increased Mine Throwing SpeedSupported Skills have 1% reduced Mana ReservedMines from Supported Skills have 1% increased Detonation SpeedMine lasts 5 seconds
Supported Skills deal (40-33)% less Damage
Supported Skills deal 5% more Damage for each prior Mine in Detonation Sequence
Supported Skills have a Base Mine Detonation Time of 0.25 seconds
Supported Attack Skills cannot be used with Melee WeaponsThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket., High-Impact Mine SupportHigh-Impact Mine SupportMine, Support, AoE, Aura
Icon: Y
Level: (1-20)
Cost & Reservation Multiplier: 50%Requires Level 31Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a mine that will use the skill for you when you detonate it. Mines cannot use channelling skills.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills have 0.5% increased Mine Throwing SpeedSupported Skills have +0.25% to Critical Strike MultiplierSupported Skills have 0.5% reduced Enemy Stun ThresholdMine lasts 5 seconds
Each Mine from Supported Skills applies 2% chance to deal Double Damage to Hits against Enemies near it, up to a maximum of 100%
Supported Skills have a Base Mine Detonation Time of 0.25 seconds
Supported Skills deal (35-28)% less Damage
Supported Attack Skills cannot be used with Melee WeaponsThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket..

Area of Effect: Increased AoE will increase both the area in which the ice shards randomly fall and also the radius of the individual ice shard damage. Full spell damage is done at any point within the AoE of a shard, however due to the fact that enemies take up an area, and not simply a point, less spell damage is dealt to any given enemy as area increases. This is why, contrary to popular belief, increasing the AoE of Icestorm decreases the average number of hits to single target. However, this is only true if the enemy remains within the AoE of Icestorm for its whole duration. Increasing the AoE can therefore be advisable for movement-heavy fights.

Duration: Increasing duration with either supports or passives will increase the total number of ice shards that fall before the spell ends. Additionally, the length of time the chilled ground remains also increases or decreases.

Damage Effectiveness: Damage from secondary sources like 'added damage' supports or heralds applies at only 60% of their listed value.

Damage per Second: Due to the complexity of estimating actual DPS of the skill including all possible factors, ingame tooltip shows only average damage per hit of one ice shard, with actual DPS of the skill being considerably higher.

Strategy

Cast while Channelling SupportCast while Channelling SupportSupport, Channelling, Spell, Trigger
Icon: W
Level: (1-20)Requires Level 38Must support both a channelling skill and a non-channelling spell skill to work. The channelling skill will trigger a spell periodically while channelling. Cannot support skills used by totems, traps, or mines. Vaal skills and skills that reserve mana cannot be triggered.Per 1% Quality:1Superior2Anomalous3DivergentSupported Channelling Skills deal 0.5% increased Damage
Supported Triggered Spells deal 0.5% increased DamageSupported Skills have 0.5% increased Attack and Cast SpeedSupported Skills have 0.5% increased Effect of non-Damaging Ailments on EnemiesTrigger a Supported Spell every (0.45-0.35) seconds while Channelling Supported Skills
You cannot Cast Supported Triggerable Spells directlyThis 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 Active Skill Gem you wish to augment. Right click to remove from a socket. allows the use of very cheap skills, completely skipping the otherwise heavy mana costs, and also skipping the long cast time, in the extreme case: going from 0.75 second cast times down to .30 second cast times, and 100 mana down to 2 using BlightBlightSpell, Chaos, AoE, Channelling, Duration
Level: (1-20)
Cost: (2-5) Mana
Cast Time: 0.30 sec
Radius: 26Apply a debuff to enemies in front of you which deals chaos damage over time. Enemies who aren't already debuffed by Blight are also hindered for a shorter secondary duration, slowing their movement. Continued channelling adds layers of damage to the debuff, each with their own duration.Per 1% Quality:1Superior2Anomalous3Divergent0.5% increased Area of Effect1% increased Chaos Damage3% increased Secondary DurationDeals (3.1-257.4) Base Chaos Damage per second
Base duration is 2.5 seconds
Base secondary duration is 0.8 seconds
80% reduced Movement Speed
Debuff can have up to 20 layers of Damage
Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
+(0-6) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket..

Version history

Version	Changes
3.17.0	Icestorm (granted by The Whispering Ice Unique Staff): Now has an Added Damage effectiveness of 100% (previously 60%), which affects the 3 to 5 base Cold Damage per 10 Intelligence that the Skill grants (this is a buff).
3.12.0	The Ice Storm skill has undergone a significant rebalance, with larger impacts falling in a smaller area meaning you are significantly more likely to hit targets within the area multiple times over the storm's duration than before: Now has 2 to 4 base Cold Damage per 10 Intelligence (from 1 to 3). Now has a base Duration of 1 second (from 1.5 seconds). Now gains 0.1 seconds of additional base duration per 100 intelligence (from 0.15 seconds). There is now 1 impact every 0.2 seconds (from every 0.1 seconds) Now has an Added Damage effectiveness of 60% (from 45%). Now has a maximum of 5 storms at a time (any more than that replace the oldest). Impacts now have a base radius of 16 units (from 10). Impacts can now land in an area with a base radius of 22 (from 25).
3.11.0	Now has an added damage effectiveness of 45% (from 30%).
3.6.0	Icestorm now has a 0.75 second cast time(was 1s) and a 6% chance to critically strike.(from 5%).
2.0.0	Icestorm has been added to the game.