Periodic Effect

Periodic effect refer to those that deal damage or heal constantly over time.

Damage over time
Damage over time (DOT) is a condition that causes the affected unit to constantly take damage until the effect expires, is dispelled, or target moves out of range. Damage is dealt at the end of each interval, the first of which begins when the spell lands. Some spells come with an initial damage, which may or may not equal to the periodic damage.

Abilities that deal damage over time

 * Upgraded with.