User blog comment:Purebreaker/Shera, The Thunder Savior/@comment-7709681-20150109151344

At its best can have 64% Damage Reduction for 2s, and requires to trigger her innate passive, activate her ult and strike 5 enemies with Q. Despite the numbers are considerably good, earning them does require considerable efford, as is unreliable (With the exception of the ult, its the only source that does worth it).

Also, why would a tank want to become invisible --rather than jumping, dashing or even walk straight forward-- when this is meant to hinder the enemies' damage output, not ignore it?