Talk:Singed/@comment-4600122-20120416223015/@comment-4068613-20120417130256

Given Singed's basic strategy (run around in the enemy team while dripping glues and flings), Rylai's basically means that the entire enemy team has a 15% slow constantly whenever he's part of a teamfight. It makes it easier for your team to catch straggling squishies, and it can be the difference between an escaped singed and a dead singed.

Basically, it helps his utility.