trying to find "replacements" is the biggest mistake you can make in this game. Everyone who tried to find "replacements" when the fist ban list came out missed the whole point of the list of the new list in the FIRST place.
The first ban list brought
Mystical Space Typhoon from 3 to 1. everyone starting using
Dust Tornado, completly ignorant of how useless it was in a format that encouraged cards that can be chained to
Dust Tornado anyway. All in all, with all the power cards gone, people played faster without fear of them,
Dust Tornado was too slow, people chained to it, and it was the worst top deck ever in a format when the majority of the cards in someone's deck needed to be usable in any situation.
The purpose of banning
Cyber Jar and
Dark Hole was to prevent people from using the cards and replacements for them. Even more importantly, they were banned to encourage people to over extend themeselfs in their (
Dark Hole &
Cyber Jar) absence.
Instead of trying to find replacements for these cards you should be trying to find a way to take advantage of the fact they are gone. Also, make your deck able to handle the amount of over extending people will do.
If you want something similar, use
Lightning Vortex. I personally think it's still not worth more then being side decked.
Needle Ceiling is definatly something to consider for your side deck, especially with
Treeborn Frog in your deck.