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

Sounds like a toxic concept, both for the user and the other players.

On one hand you have the user, which can be patient and go unharmed by any threats except Champions, the Dragon and Baron Nashor, but if they reach her she's dead, the only later-game utility that has is that she can tank structures as much as she wants unless enemy champions are at proximity; additionally she possess similar problems to those of Gnar's transformation: Due to the nature of her secondary passive, she's unable to have actual control over the attack range, none other than keep attacking, which sounds counter-intuitive both by the E and the fact that you don't want the enemy champions to engage you.

Additionally, she can't benefit from defensive items except those that doesn't interact with her stats, such as Guardian Angel, but become both Cost and Slot inefficient due to she not benefiting from defensive stats; you would be paying only for their passives and actives.

On the other the enemy players, both owner of the highest base attack range and the highest possible attack range, great ranged harrass, can become untargetable and invulnerable (Not both at the same time, that's something) and, during the ult, can have the highest melee range; all of this effects are nothing but the divergent results of the innate passive.