Time modifiers (no official name given, also known as time warps or time-altering abilities) are effects that alter time within their area of influence. Each time modifier can only affect one side of the battle (only allies or only enemies).
Not being true slows, they are unaffected by crowd control reduction and crowd control immunity. Also, unlike slows, they do not affect jump height.
Everything within the time modifier area is affected, including attack speed, abilities' cooldowns and health regeneration of any kind.