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Damage over time (DoT) is a term used to describe damage dealt over a certain period of time, dealing a portion of the total damage at regular intervals. The instance of damage dealt per interval is commonly referred to as a tick. Ticks often occur every second (1), every half-second (0.5), or every quarter-second (0.25), and occasionally every half of a quarter-second (0.125).

Damage over time can trigger spell effects, usually through the Blaze.png persistent damage or Poison Trail.png persistent area damage source type. Although some may use Umbra Blades.png periodic damage or Death Lotus.png area damage.

Types of DoTs

Single-Target DoTs

Single-Target DoTs deal their total damage overtime through a debuff on the target, dealing the damage for as long as it persists. This type of DoT is usually not removable once it has been applied.

Champion abilities
Items
Summoner Spells
Neutral Buffs

Tether-Sourced DoTs

Tether-Sourced DoTs deal their total damage overtime through a Focused Resolve.png tether on the target. If the tether breaks, the DoT is removed immediately.

Champion abilities

Area of Effect DoTs

Area of Effect DoTs deal their total damage overtime to all targets within a area. The damage will stop as soon as the target leaves the area. However, some sources of this type may also deal their damage through a short debuff that continuously refreshes while the target remains within the area and lingers for that duration after it stops refreshing. There are two sub-types for this type of DoT: Static-Area DoTs and Point-Blank Area DoTs.

Static Area DoTs deal their total damage overtime to all targets within a specific location.

Champion abilities

Point-Blank Area DoTs deal their total damage overtime to all targets within an aura, an area near the source (the unit who is inflicting the DoT).

Champion abilities
Items
Gameplay Elements
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