You're probably talking about Crystal Maiden's Frostbite ability, which is based off Keeper of the Grove's Entangling Roots ability with the buff's model changed to a Crystal doodad.
Actually, the buff model is "Buff - Freezing Breath".
How do you guys know about DotA's internal workings? Is there an open map somewhere?
rofl.dota 90% vjass and 10% hashtables after 56th version, and coded much more better then most people can.
fixed.DotA = vJass.