Tell me one good reason why invulnerable save couldn't have been place immediately under the regular for any character where it matters.

Zoinks, this guy is a creep! If only there was some sort of way to see his horrible warped mind visualized through his physicality. Alas, he is only ever seen in shadows and wearing a mask, so such ideas will surely remain in the realm of sheer folly.

Love walking around in B'more and finding many fun surprises.