Woah. Someone hates Electrocutor and Twin Universe.
Yes, there is no counter but to nerf twin universe we forget is to disrupt 17%(Guess) of the decks in the game. Electrocutor can't break the game. It's barely enough power and overall under Shard of Sacrifice, which is under Shard of Focus, making it average powered, if not, slightly powerful. It is susceptible to PC in the highest and there is only a minimal chance for it to become immterialized. How many Earth/Aether duos do you ever see? Please don't throw up an image of a deck no one ever seen before. I get it takes the skills off of creatures but it is either played before or after enemy creatures come out. If it is played before, most players account for it in summoning their creatures and summon creatures simultaneously to avoid losing the skill power of all of them. If played afterwards, it is a target for PC. What you post, you act as if there is no summoning sickness/PC/Pulverizer/Butterfly Effect in the game. There are 6 ways to counter permanents. Steal, Deflagration, Pulverizer, Butterfly Effect, Effective Quanta Denial, and Effective Hand Control. Steal and Deflagration run in almost every deck, and rainbows are almost the entire meta of this game right now so don't act as if there is no permanent control in this game. This game has too much permanent control. In fact, let's remove all of it! (Joke)
An effective nerf to parallel universe is having the unupgraded version produce half the stats. This doesn't completely change PU and renders TU more powerful.
Omega is right about Lobotomizer not being as powerful without Dim. Dim as a MUCH greater impact on Aether than Lobotomizer. So does Fractal. If we replaced Dim and Fractal in Aether, I guarantee you, everyone on EtG woulddrop their keyboards and go "I'm done with Aether." However, a nerf is needed for dimensional shield.
I might of contradicted myself at some point. What I am saying is, Lobotomizer isn't as overpowered as you think and doesn't carry as much as an impact Dimensional Shield, Fractal, Lightning, and Psion carry on EtG. Aether can live without Lobotomizer. Aether will starve without Dimensional Shield. Which is why we need to Nerf it. Lobotomizer is overshadowed by the more powerful cards in Aether in my opinion. Since Aether is overpowered, nerfing most of the card should be in the right order.
I daresay, nerfing phase dragon from 13|8 doesn't make it that much less powered really.