Why is stormraiders surge still not removed?
This mastery is actually the most bullshit of them all. There is nothing you can do to stop someone from proccing it. The cooldown is way too low and it fits perfectly with spam champs like Kennen and Riven that don't want you to be able to fight back.
But I guess its ok that one mastery makes champs that rely on a slow to stick to a target bad since it hasn't been changed yet.