Evasion

Not to be confused with Dodge.

Evasion is a rating that measures a character's ability to avoid being struck by enemy attacks. Evasion is opposed by the attacker's Accuracy.

All classes start with 53 base evasion rating and gain 3 additional evasion per level. This gives a base of 350 at level 100 (not considering dexterity).

Dexterity also grants bonuses to evasion. Every 5 points of dexterity provides 1% increased evasion rating.

Movement speed is beneficial for characters that employ evasion as the primary form of damage reduction, since it requires a play style where physically avoiding enemy spells and attacks is often necessary.

Mechanics

Evading an attack prevents all damage and other harmful effects including status ailments and stun. Only melee and ranged attacks can be evaded; spells cannot. The chance to evade an attack is based on evasion verses the attacker's accuracy. Chance to evade can never be lower than 5%, nor higher than 95%.

Chance to Evade = 1 - Attacker's Accuracy / ( Attacker's Accuracy + (Defender's Evasion / 4) ^ 0.8 )

Evasion also gives an implicit chance to avoid taking critical strikes from attacks. Critical strikes from spells can't be evaded. If an incoming critical strike succeeds its hit roll, a second hit roll is performed to determine if the critical is evaded or not. If this roll succeeds, a critical strike is scored. If it fails, the attack still hits, but only for regular damage.

Evasion is not actually based on chance in the technical sense, but can still be referred to as such. The mechanics behind it are designed to evenly spread out hits and misses such that players always evade an average number of times according to their ‘chance’ to evade. For example, a player with 75% chance to evade will always evade three times between each hit.

Interaction with Dodge

Chance to Dodge bonuses granted by sources like Acrobatics function similar to evasion, but are rolled separately. Phase Acrobatics grants a chance to dodge spells.

Assuming a character has a 40% chance to evade and a 20% chance to dodge, a character has a 52% chance to avoid taking damage.

Chance to Avoid Attack = 1 - ( (1 - Chance to Evade) * (1 - Chance to Dodge) )

Passives

There are passive skill nodes that grant additional evasion or a combination of bonuses including evasion.

Evasion

These passives increase evasion rating by a percentage.

In the case of Arrow Dodging, the chance to evade projectile attacks is doubled.

Icon	Name	Bonuses
File:Passive-evasion.png	Evasion	10% increased Evasion Rating 18% increased Evasion Rating
File:Passive-reflexes.png	Reflexes	30% increased Evasion Rating
File:Passive-evasionandenergyshield.png	Evasion and Energy Shield	8% increased Evasion Rating 6% increased maximum Energy Shield 10% increased Evasion Rating 10% increased maximum Energy Shield
File:Passive-nullification.png	Nullification	10% increased Evasion Rating 10% increased maximum Energy Shield 10% increased Energy Shield Cooldown Recovery +10% to all Elemental Resistances
File:Passive-armourandevasion.png	Armour and Evasion	8% increased Evasion Rating and Armour
File:Passive-leatherandsteel.png	Leather and Steel	24% increased Evasion Rating and Armour
File:Passive-frenzychargesmall.png	Evasion per Frenzy Charge	4% increased Evasion Rating per Frenzy Charge
File:Passive-keystone-arrowdodging.png	Arrow Dodging	Doubles chance to Evade Projectile attacks

Miscellany

These passives are related to evasion, but don't fit into any other category.

Icon	Name	Bonuses
File:Passive-keystone-ironreflexes.png	Iron Reflexes	Converts all Evasion Rating to Armour
File:Passive-keystone-unwaveringstance.png	Unwavering Stance	Cannot Evade enemy attacks Cannot be Stunned