Talk:Randuin's Omen/@comment-151.103.97.1-20120906183644/@comment-4068613-20121003050112

If a unit would be slowed by more than one effect from an item at the same time, only the strongest slow is applied.

You can, however, stack slows from different sorts of sources.

For example, you can slow someone with Frozen Mallet, Blessing of the Lizard Elder, and any champions' slowing ability all at the same time, and they will stack multiplicitively.