Nobody does clear skys, that's pointless. Why isn't it the default OU to begin with? More people would be using it then and it would make OU more balanced than it currently is here.
Who was the guy at Gamefreak one day that decided "You know what, Sunny Day, Rain Dance, Hail, Sandstorm, weather stones, that isn't enough. Why don't we just make unlimited instantaneous upon entry and make everything else useless? It's sure to break the meta-game!"
