OK, I've been testing variations on this deck concept for around an hour and can't seem to make any headway, so I'm posting so people can join in the tweaking process.
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4vk 4vk 4vk 4vk 4vn 4vn 4vn 4vn 4vn 4vn 5up 5up 5up 5up 5uu 5uu 5uu 5uu 5uu 5uu 5v0 5v0 5v0 5v0 606 606 606 606 606 606 606 606 606 606 606 606 606 606
I started out using Pandemonium/Voodoo Doll, which stalled him for a VERY long time, but didn't really have the punch necessary to win before deckout, and also lacked healing, so he wore me down every time. Threw in some Antimatters, which usually just sat in my hand for a while, and I was having huge quantum issues, so I bloated the deck to 40 to fit more pillars and still carry the copies of other cards I would need to pull it off.
With Pandemonium, some surprisingly helpful things can happen, though far too infrequently to be reliable. A few times I actually PU'd an Otyugh and stole one Gravity Tower, letting me eat everything in sight... but I still didn't win that one, he got the kill when he brought out Titan.
AM/LS seems to be very stunted by his Otyughs. I have managed to mutate or LS his Oty after AM/LS'ing a well-grown Firemaster... they still don't last long enough. Steal works on Gravity Shield, but Pandemonium was my only way to deal with Momentum. (That was the reason I was lasting so long with it.) Nightmare was pretty cool - he spends his whole deck, and it's possible to stall him with only one Firemaster out, letting it grow very large before AM/LS.
This is showing promise, but it's lacking some tweaking, maybe a few extra pairs of eyes will spot something I'm not.