User blog comment:MrSuperSpy/Abodine, Evil's Manifestation/@comment-7709681-20150111050626

First and foremost, your innate passive stealth is already an existing mechanic (Evelynn's Innate Passive) but taken into a extreme which simply makes it a bad design. Having a passive stealth under the same effects of Evelynn's stealth while turning it into a shapeshift ability even more unstable than Gnar's innate passive would make it extremely unconfortable, as the user would simply not have control over the transformation.

Second, along the two kit the champion gets too much free stats (Armor, Magic Resist, Attack Speed, Movement Speed x2), a bunch of toxic mechanics (Hard CC upon unstealthing, uncontrolable shapeshift ability, mana drain on each hit, %Health true damage on each hit and, most importantly, forcing an action on an ally) and abilities poor in gameplay (Free stats and minuscule effects such as the AoE vision).