User blog comment:AP Sejuani/CB1 Xia, the Ancient Darkness/@comment-26044269-20150330081034/@comment-24333627-20150331002329

It isn't really supposed to be achievable, it's mainly for if you massively fuck up by, for example, ulting away as TF while the Oblivion Strike mark is on you. But yeah, it would be nearly impossible to achieve without someone making a huge misplay.