When Lusamine's Nihilego transformed into that black squid with eyeball tentacles, I felt that it could have been a cool new alt form for Nihilego. So I tried fleshing out the concept a bit. Any thoughts?

Shadow Nihilego
Type: Dark/Poison
Ability: Beast Boost

Base stats: 570
HP: 109
Atk: 7
Def: 47
SpA: 149
SpD: 107
Spe: 151

Its signature move: Ultra Corruption (Poison type version of Mind Blown)
Its battle theme: https://youtu.be/ZRP7tCvg-Og