Spirit is a reserve of power used to activate and maintain skills with permanent effects. Spirit-powered skills are managed within the Skills Panel.
Weapon Sets can have differing amounts of available Spirit, due to weapons with Spirit (such as Sceptres), Weapon Set Passive Skills, or Persistent Skills that are active in specific Weapon Sets.
Reservation
Reservation effects prevent a portion of a given resource — usually Spirit, though it can also be Life or Mana — from being used for other purposes while active. Reserving a resource does not change the maximum value of that resource.
Charges
Charges can be gained from a number of Skills, passives, and other effects. They do not grant any inherent benefits, but can be consumed to fuel many skills and other effects. Charges last for 15 seconds by default, refreshing whenever you gain another charge of the same type.
There are three types of Charges — Endurance, Frenzy and Power. By default players can have up to 3 of each type of Charge at once.
Leech
Leech recovers an amount of Life, Mana, Energy Shield, or Rage over one second, usually as a result of Hitting an enemy and based on the damage of the Hit.
Only one instance of Leech for each resource can provide recovery at a time.
Life Leech
When you deal damage with a Hit, Life Leech causes you to recover an amount of Life to a percentage of the damage dealt, over a period of one second.
Hits that deal more than 40,000 total damage are treated as though they only dealt 40,000 damage for this calculation. If this damage is of multiple Damage Types, the ratios between them will stay the same.
Monsters have Leech Resistance that increases with monster level, reducing how much you recover from Leech from Hits against them.
You can only recover from a single instance of Life Leech at a time, and all Life Leech is removed when Life is filled.
Mana Leech
When you deal damage with a Hit, Mana Leech causes you to recover an amount of Mana to a percentage of the damage dealt, over a period of one second.
Hits that deal more than 40,000 total damage are treated as though they only dealt 40,000 damage for this calculation. If this damage is of multiple Damage Types, the ratios between them will stay the same.
Monsters have Leech Resistance that increases with monster level, reducing how much you recover from Leech from Hits against them.
You can only recover from a single instance of Mana Leech at a time, and all Mana Leech is removed when Mana is filled.
Recoup
When you take damage from a Hit, Recoup causes you to recover an amount of the stated resource equal to a percentage of the damage you took over 8 seconds.
Low Life
A player or monster is on Low Life if it has 35% of its Maximum Life or less.
Low Mana
You are on Low Mana if you have 35% of your Maximum Mana or less.