Talk:Rylai's Crystal Scepter/@comment-67.176.66.18-20110305004922/@comment-24.146.194.181-20120429174016

slows from items stack with slows from abilities, and slows from abilities stack with each other, however, only ONE item slow may affect anyone at any time, item slows won't stack with each other.

Also, slow is subject to diminishing returns the same way that haste is, once a person is slowed enough, further slows have diminished effect.