Guildrun Frost - Rules, Items and Counters

How Frost works

Each stack reduces Attack Speed and Defense by 0.5, then one stack dissipates every 2 seconds.

Items that use Frost

Item	Classification	Relevant effect or role
Amulet of Storms	Epic	+25 Magic , +4 Mana Regen , +25 Starting Mana On cast, remove 30 Frost from each enemy with 30 or more Frost to Stun those enemies for 2 seconds.
Amulet of Winter	Epic	+40 Magic , +45 Defense Quest: Inflict 400 Frost Reward: Whenever the holder inflicts Frost, inflict 33 % more.
Freezing Contract	Rare	+25 Magic , +30 Defense Quest: Inflict 200 Frost . Reward: Whenever the holder inflicts Frost, inflict 20 % more.
Freezing Gauntlet	Unique	+30 Defense Every 2 times the holder is auto attacked, inflict 1 Frost on the attacker.
Freezing Ring	Unique	+12 Magic , +15 Defense Quest: Inflict 50 Frost . Reward: Gain 10 Shards .
Freezing Tome	Unique	+25 Magic On cast, inflict 10 Frost on the nearest enemy.
Freezing Wand	Rare	+25 Magic , +4 Mana Regen On cast, inflict 12 Frost on the nearest enemy.
Frosted Gauntlets	Epic	+200 Max HP , +30 Defense , +20 Attack Speed On auto attack, inflict 2 Frost on the target. When auto attacked, inflict 2 Frost on the attacker.

Relics that use Frost

Relic	Classification	Relevant effect or role
Duelist's Chill Banner	Unique	Whenever a Duelist auto attacks, they inflict 2 Frost on their target.
Duelist's Rhythm Prism	Epic	Whenever a Duelist auto attacks, they randomly inflict 2 Poison , 4 Frost , or 6 Burn on their target.
Frost Accumulator	Unique	Quest: Inflict 100 Frost . Reward: Gain 15 Shards .
Frost Amplifier	Rare	Whenever a Hero inflicts Frost , inflict 33 % more.
Frost Ascendancy	Epic	Quest: Inflict 800 Frost . Reward: The first time each enemy reaches 75 Frost , Stun them for 2 seconds.
Frost Bauble	Unique	At start of combat, inflict 10 Frost on all enemies.
Frost Catalyst	Rare	After Stall ( 15 , Stall 30 , and Stall 45 ), all enemies receive damage equal to 5 times the amount of Frost they have.
Frost Conduit	Rare	Quest: Inflict 400 Frost . Reward: Whenever a Hero inflicts Frost, they gain 1 Magic and 1 Attack per 4 Frost inflicted.
Frost Dragon's Chill	Act Boss	At start of combat, inflict 8 Frost on all Heroes. On combat victory, permanently increase the amount of Frost this inflicts by 3 .
Frost Migrator	Epic	Whenever an enemy dies, transfer their Frost to the nearest enemy.
Frost Surge	Common	At start of combat, inflict 20 Frost on all enemies.
Frost Vessel	Common	Quest: Inflict 200 Frost . Reward: Heroes gain 30 Defense and 3 Mana Regen .
Glacial Decay Engine	Legendary	Frost now deals damage to enemies when it ticks down (like Burn does).
Glacial Guard Prism	Epic	Whenever a Hero inflicts Frost , they gain 6 Shields per Frost inflicted.
Mage's Cataclysm Engine	Legendary	Heroes gain 50 Magic . Whenever a Mage casts , they inflict Burn and Frost on all enemies in their range equal to 20 % of their Magic .
Mage's Elemental Banner	Unique	Whenever a Mage casts , all enemies in their range take 4 damage per Frost and 2 damage per Burn they have.
Mage's Frostbite Banner	Unique	Whenever a Mage casts , they inflict Frost on their target equal to 66 % of the Mana spent.
Mage's Memento	Rare	At start of combat, inflict 15 Frost on all enemies per Mage in combat.
Plague Ascendancy	Epic	Quest: Inflict 25 Poison , 50 Frost , and 75 Burn on a single enemy. Reward: At start of Combat, inflict 25 Poison , 50 Frost , and 75 Burn on all enemies.
Plague Bauble	Unique	At start of combat, inflict 3 Poison , 6 Frost , and 9 Burn on all enemies.
Plague Generator	Common	At start of combat, inflict 5 Poison , 10 Frost , and 15 Burn on all enemies.
Plague Transmission Engine	Legendary	At start of combat and every 10 seconds, inflict 10 Poison , 20 Frost , and 30 Burn on all enemies.
Tank's Frostplate Banner	Unique	Whenever a Tank is auto attacked, they apply 2 Frost to the attacker.
Thermal Inverter	Epic	Whenever a Hero inflicts Burn , also inflict 50 % of the Burn applied as Frost . Whenever a Hero inflicts Frost , also inflict 50 % of the Frost applied as Burn .

Heroes that create or scale Frost

Hero	Classification	Relevant effect or role
Aria	Mage	Channel an energy beam for 2.5 seconds. Each half second, deal 15 (+ 100% Magic ) damage, inflict 1 per 15 Magic Frost , and inflict 1 per 10 Magic Burn to all enemies inside the beam.
Dragomir	Assassin	Gain 1 (+ 10% Crit ) Omnivamp , then deal 250 (+ 200% Magic , + 1000% Omnivamp ) damage. On kill, gain 2 (+2 per rank ) Shards .
Funke	Mage	Blast a fireball at all enemies in Funke's range , dealing 175 (+ 200% Magic ) damage and inflicting 15 (+ 66% Magic ) Burn .
Gustav	Mystic	Create a Blizzard for 5 seconds. Each second, inflict 1 (+ 1 per 8 Mana Regen ) Frost and deal 10 (+ 50% Magic ) damage to enemies inside the Blizzard. Shield Heroes inside it for 10 (+ 75% Magic ) .
Irini	Duelist	Each auto attack, gain 1 Attack Speed . After Stall ( 15 ), auto attacks deal 100% Attack Speed bonus damage .
Kai	Warrior	Charge up a mighty attack, gaining 300 (+ 400% Attack , + 250% Magic ) Shields . After 2 seconds, deal 100 (+ 100% Attack ) damage plus bonus damage equal to Kai's remaining Shields to surrounding enemies.
Karsu	Duelist	Loose a volley of 5 arrows at nearby enemies. Each arrow deals 25 (+ 100% Attack , + 100% Magic ) damage and inflicts 4 (+ 1 per 15 Attack Speed ) Frost .
Niklas	Vanguard	When Niklas survives combat, consume the item in his left-most item slot. Permanently gain 100 % of its stats and gain Shards equal to 80 % its value . For Rush ( 14 ), auto attacks inflict 1 (+ 1 per 500 Max Health ) Burn per equipped item.
Nyx	Duelist	For Rush ( 5 ), gain 5 (+ 25% Attack Speed ) Attack Speed and 5 (+ 25% Attack ) Attack for each time this ability has triggered this combat. Every 12 auto attacks, refresh all of Nyx's Rush abilities.
Pimenta	Tank	Create a poison cloud around Pimenta for 4 seconds. Each second, deal 5 (+ 50% Magic , + 50% Defense ) damage and inflict 2 (+ 1 per 25 Defense ) Poison to enemies in the poison cloud. Each second after Stall ( 15 ), gain 3 (+2 per rank ) HP/S per enemy in the poison cloud.
Pollen	Mystic	Create a flower field for 5 seconds. Each second, inflict 1 (+ 1 per 8 Mana Regen ) Poison on enemies and apply 10 (+ 100% Magic ) Shields to Heroes inside the flower field. Each second after Stall ( 15 ), heal Heroes inside the flower field for 10 (+ 50% Magic ) .
Ratna	Mage	Conjure celestial magic to deal 190 + 150 | 250 | 450 | 750% Magic damage. On kill, permanently gain 10 (+10 per rank ) Magic . On Crit, Stun all enemies for .5 (+.5 per rank ) seconds.
Reyna	Warrior	Unleash a 3 -punch combo. Each punch counts as an auto attack that deals 100 (+ 100% Attack , + 50% Magic ) % damage (Max: 500 %) and gives Reyna lasting Shields equal to 33 % of the damage dealt.
Rowan	Vanguard / Tank	After Stall ( 10 ), gain 2 (+ 1 per 100 Max Health , + 1 per 15 Defense ) HP/S .
Sal	Mage	Sal empowers her attacks, causing them to also hit the nearest enemy to Sal's target, dealing 10 (+ 50% Magic ) bonus damage and inflicting 1 (+1 per rank ) Frost . This ability stacks.
Skorn	Tank	When auto attacked after Stall ( 10 ), deal 2 (+ 100% Magic ) damage and inflict 1 per 50 Defense Poison on the attacker.
Tilly	Warrior / Duelist	Gain 25% Attack Attack Speed and 25% Attack Speed Attack . Every 25 auto attacks, gain 2 (+2 per rank ) Shards .
Zuri	Tank / Assassin	On Crit, permanently gain 1 Defense and 1 Magic . Triggers 2 (+ 1 per 20 Crit , + 1 per 60 Defense ) times per combat.

Enemies related to Frost

Enemy	Classification	Relevant effect or role
Mushroom Frost Mage	Ranged	Call down a frost storm for 4 seconds. Each second, deal 30 (+ 100% Magic ) damage and inflict 6 (+ 2 per 33 Magic ) Frost to all enemies inside the frost storm.
Frost Dragon	Ranged	Deal 200 (+ 200% Magic ) damage and inflict 10 (+ 40% Magic ) Frost to all enemies.

How to use Frost in a run

Frost is both mitigation and damage support. Apply it before the enemy's main attack cycle and before your carry's burst.

1. Check the trigger condition.Range, Crit, cast, target, Rush, Stall, and quest requirements decide whether the effect appears at all.
2. Check the first application.Timing can matter more than the final stack count, especially against an opening threat.
3. Separate trigger from amplifier.Confirm the team can create the effect before buying equipment that only improves it.