Great. First off, that is Articuno that can do that (and Smeargle, but whatever.) Second, that is worthless, as the foe will just switch out. Kind of makes things a psuedo-haze, like Yawn, but still not the best move. And it requires using Articuno, an Ice/Flying type! Suicune is amazing, and can pull off using SHeer Cold on a set, Articuno can't.