hmm... unupped and upped are so different I agree that they should probably be 2 different cards. The only real link being that the upped version can counter the unupgraded version
Each has some interesting applications on its own.
Double sky blitz and double fractal are a little worrisome for me. Not that they shouldn't be doable, but I am a little worried that this card makes it a little too easy to pull off... Chaos wyrms with double blitz, dive, and SoFr... all you need is 2 wyrms that get at least +3 atk from chaos power, which is the average, and you can get a potential 144 point OTK. Its not that much nastier than some other OTK's but it is a good illustration of the potential power to consider.
If that is not annoying enough for you then consider this: It lets you effectively pack 12 dim shields (or sundials) into a deck!...
Please don't buff dimshield like that... it gives me an eye twitch just thinking about it... thats just mean!
As for the upped version. The mindgate lock potential makes me shudder here... Get one of these and a mind gate going and you can lock down your opponent pretty hard. Alternately, think of what happens with nightmare! Thankfully its at least tricky to splash into GoTPmare due to cost.
Of the two, I actually like the upped version more. The mindgate combo will at least force players to come up with interesting deck ideas. The combo would almost hard lock strategies that rely on only one or two card types *cough* graboid rush and dim. shield spam *cough* ... So I think this card would do the meta some good in that respect.