If you like, when you respond you can list what you voted for and why, here's mine:
Supernova - This to me is hands down the most overpowered card in the game. 22 free quantum with no drawback (other than nominal casting cost) is just way way way too fast. This card, more than any other, is responsible for rainbow deck dominance.
Electrum Hourglass - Card advantage (
http://en.wikipedia.org/wiki/Card_advantage) is a huge factor in who wins or loses in a CCG. It's hard to get better card advantage than a cheap, re-usable drawing mechanism and this negates any penalty for playing a large deck.
Poison Damage - Poison damage stacks too quickly, is too inexpensive and is too difficult to counter.
I didn't vote for Sundial. While I agree it's also overpowered and provides a huge card advantage, at least it is for a limited duration. Plus I figure everyone else will vote for it so I don't need to. : P
I felt the poll in the original topic (
http://elementscommunity.org/forum/index.php/topic,1035.msg10866#msg10866) was flawed in that there was one obvious choice but maybe more than one thing is overpowered in the game. Sadly it's impossible to add to the number of votes in the original poll so it's gone & I present OP poll #2. Yeah I know.. kinda lame on my part, sorry.
This time there's a wide range of cards that have been mentioned on the forums & in chat so people have a lot of options. If you think there is something that really should/shouldn't be getting votes do please mention it.
Also, just because something is overpowered does not mean it must be nerfed. As has been mentioned, sometimes the solution is buffing weaker cards to match the power level of stronger cards. The objective is game balance.