Board Thread:Wiki discussion/@comment-4881935-20130327060139/@comment-4087140-20130328075940

The mouse is not a game entity, and if there is any delay whatsoever to the activation of the ability, the mouse may be in a completely different location by the time the area actually exists; it has a center, as any circle does, but it is purely conceptual. There is no actual thing there from which to measure a range.