Damage over time

Damage over Time (or 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 it's total damage at regular intervals. The damage is often done every second or every half-second, and the instant in which it is dealt is called "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. However, 100% spell vamp will be applied if the source of damage is single-target spell.

Types of DoT's and Their Sources
The different types of DoT's only differ on if 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 using active to cleanse the effect.

Abilities

 * 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.
 * 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.

Thether-like DoT's
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 who applies them. Another difference is that further damage from these abilities cannot be avoided with the use of.

,Damaging Area DoT's
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. And some sources of this DoT's are moving units. Further damage from these abilities cannot be avoided with the use of.