User blog comment:JmLyan/Katsuhe, the Maiden of Ionia/@comment-7709681-20140821173923/@comment-7481207-20140821175512

She doesn't necessarily have to be dead if someone reaches you, that's what the E is for, especially the high ms boost. But the E can be baited, either to follow up with a kill or to scare her into using it incorrectly to put it on a long CD.

Stacks from W fall off only after 3 seconds, so using E will not directly prevent you from maintaining them. And finding a target to attack to keep it up shouldn't be too hard with 1000 attack range. Tanking turrets is a miss though.

150 is not the highest melee attack range, 7 champions beat it with 175 passive range, but several can have higher temporarely. If you meant she would get the highest from her W passive, the range increase is disabled during her ultimate.

She might be a tad bit toxic perhaps, but she is far from uncounterable and definatively have weaknesses to compensate her strengths.