modify(e, 'effect')

Syntax

modify(entity, 'effect', name, duration, amplifier, show_particles, show_icon, ambient)

Applies status effect to the living entity. Takes several optional parameters, which default to 0, true, true and false. If no duration is specified, or if it’s null or 0, the effect is removed. If duration is less than 0, it will represent infinity. If name is not specified, it clears all effects.