User blog comment:JmLyan/Shoru, the Unseen Shadow/@comment-7709681-20141028230005

A bit underpowered, both as an assassin and a support; some things bother me, like the dependence of being unseen by the enemy team, the innate's health regeneration and the ult that's akin to Naga Siren's ult from DotA / DotA 2 (She doesn't turn them invulnerable and untargetable, she makes them sleep --Long stun that can be interrupted by damage-- and invulnerable, such way that they cannot be woke up nor damaged, but are still targetable).

But most importantly, the Q at max. rank and 40% CDR you can pretty much perma-shield anyone around yourself (A small window of 0.6s of time between the duration and the cooldown).

Perhaps the only advantage the concept has is the utility granted by E, be named the ally targeted stealth.