??? The Abyssal Terror!

So, as I have been researching the league of legends lore, I referred back to one of my favorites(Nautilus), now before I begin, I am not connecting dots, and confirming theories, I am simply asking the ideas of the community on my idea. So we know nautilus was left behind to die, and swallow by some black liquid substance, and later became what we know as Nautilus, I'd like to refer to the fact that not only did fizz race disappear, but Nami's race uses stones to ward off "Abyssal terrors". Now, a lot of people want to suggest thresh is the one who pulled Nautilus down, which is fine, and reasonable, but what if it could be a new champion, I am talking what if I right now we lobby for a champion? Think about it "The abyssal terror of the deep" Rito makes it something astounding, a creature so malevolent, not even thresh, the shadow isles, or the void would dare approach it domain.

My idea is a glass, that focus on mainly jungle, but could double as a tank, or assassin; mind you this was all inspired about 5 minutes ago, so if the idea seems a bit crazy... or poorly done, I sincerely apologize. He could be like zac in form, but more... "writing" more "freestyle" less of a real form then zac, dark sleek jet black, blacker then anything we've seen before.
His Q (Tortures prelude) could be a form of pull, maybe he extends a oily dark limb out of the mass that is his body, and pulls in something with in the same range as maybe "thresh" pull?

His W could be (Boundless Evil) a move where he spins around extremely fast removing all cc, and dealing a low amount of damage.

His E could be "Consume" where he can eat "Anything" with a hp bar, but only deals a certain amount of damage, not sure if this should scale ad, or ap.

E Side note : I feel as though making him ad version of thresh(All his abilities are attack damage would make him a awesome addition to league seeing how both champions close to him, "technically" are Ap based champions.

His R could be a dark twist on lulu's ult, called possess, huge cool down, but during that time he gets complete control of a champ for 6 seconds?, but the champion becomes invulnerable, but if damage is dealt to the champ equal to his hp, then.. he dies, removing the possess on the affected champion.

Also a special interaction with Nautilus, thresh, nami, and fizz.

Please critique, but do remember I wrote this in less then 10 minutes after reading some lore for about 4.