Augments are items which can be placed into Augment sockets, usually on Equipment items. Once socketed, they can be replaced by other Augments, but cannot be removed by normal means. The types of Equipment which an Augment can be placed into and the corresponding benefit provided are listed on the item.

Lightning damage is one of the five Damage Types. It is reduced by Lightning Resistance. Lightning hits have a chance to Shock based on how much Lightning damage is dealt.

The Magnitudes of a Buff or Debuff are the values of the stats it applies to the target. A Buff or Debuff with higher magnitudes is more powerful. Modifiers to the Magnitude of Buffs or Debuffs come from whoever applies it and are multiplicative with modifiers to the Effect the Buff or Debuff has on the target.

Shock is an Ailment that causes targets to take 20% increased damage, and lasts 4 seconds on players or 8 seconds on non-players by default. Lightning damage from Hits Contributes to chance to Shock enemies. The higher the Lightning damage dealt, the higher the chance. By default a Hit has 1% chance to Shock for every 4% of the target's Ailment Threshold dealt.

Resistances reduce damage taken of the corresponding damage type — Fire, Cold, Lightning or Chaos — up to a Maximum. Fire, Cold and Lightning Resistances are Elemental Resistances. Resistances can be improved with Equipment, Passives & Quest items. Your Elemental Resistances are lowered as you progress through the game. Elemental Resistances are a vital defensive tool, and should be one of the first things to check if you're having difficulty surviving.