Damage over time

Damage over time (DoT) is a term used to describe a single spell or attack which deals full damage not instantly but over a period of time, dealing a portion of its total damage at regular intervals. The damage is often done every second or every half-second, and each instant in which it is dealt is called a "tick."

The slow effect from always applies a 15% slow from abilities which deal this type of damage; the slow is applied from the first tick of the DoT until 1.5 seconds after the last tick.

For single-target DoT spells, spell vamp will be applied to the total amount of damage dealt by all ticks.

Types of DoTs and their sources
The different types of DoTs only differ in whether you can interrupt its duration by moving out of the area.

Non-decreasable duration
Once applied, there is no way to prevent further damage from the source apart from activating to cleanse the effect.

Non-decreasable duration items.

 * Useful for AD champs without a heal reduction. For the effect, not the damage.

Non-decreasable duration abilities

 * countdown before attack deals 6 true damage over 3 seconds.
 * applies to all units in an area around his attack target.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before attack deals 6 true damage over 3 seconds.
 * applies to all units in an area around his attack target.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before attack deals 6 true damage over 3 seconds.
 * applies to all units in an area around his attack target.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * applies to all units in an area around his attack target.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.
 * countdown before detonating deals 6 true damage over 3 seconds.

Tether-like DoTs
These are single-target abilities which deal damage over time by creating a visible link between the source of the damage and the target, they can be interrupted by moving out of range of or killing the enemy champion, if that champion is the source. Another difference is that further damage from these abilities cannot be avoided with the use of.

Damaging area DoTs
These refer to any ability which continually deals damage but requires enemy units to be in its area of effect. Some of these leave a damaging debuff that keeps damaging targets for some time after they leave the area. Some sources of this type of DoT are moving units while some affect a static area that damages enemies that stand or walk above it. Further damage from these abilities cannot be avoided with the use of.

Static area DoTs

 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT
 * leaves a trail of flaming DoT