my top 10 effect with:
1. Jester (2.73/1.76) (and this is even after mistaking it's effect for Swindler in a previous post)
2. Diadem (2.55/0.65) (Wait... what happened to Trusty Steed?)
3. IGG (2.36/-0.27) (Gotta love them IGG rushing games)
5. Bank (1.84/-1.29) (I am a greedy little three-faced smiley)
6. Trading Post (1.77/0.05) (They make the best soda at the Trading Post! It even looks like Silver!)
7. Noble Brigand (1.65 /0.54 ) (Wait... say what now??!?!?)
8. Counting House (1.62/1.25) (And they say you are inefficient at counting... HA! Look at ya NOW!)
9. Oracle (1.61/-0.83) (I've learned when to use this card. It is way better than you think!)
10. Crossroads (1.59/0.86) (Not sure how this got this high o.o)
My 15th best with is Pirate Ship....
Ambassador (-0.93/-0.84) (But I just won a ton of games with this card yesterday! Why me?!?!)
10 best effects without overlap a bit... if you want statistics go above or go to councilroom yourself. I'm getting tired of copying that. Well, I went to 13th because I was perplexed by Peddler.
Minion (Not really a good card. Silver with +1 action for $5 that may also end up being drawn by say, a Wharf played during the same turn and then makes you wish you got a silver...)
Hoard (I've often had times that I thought this would just slow me down)
Hunting Party (Easy to spot times it will work, just as easy for me to spot times it won't)
Possession (Only Potion card? Yeah no thanks, let my opponent facepalm 3-6 times)
Jester (Overlap.... interesting.)
Courtyard (Same as above o.o)
Caravan (They aren't cool enough)
Stables (Too stinky!)
Princess (You know that lonely geek in the corner of the room with his laptop? Yeah, that's me.)
Menagerie (Yes, it is actually a card you don't always want!)
Farmland (Farming is too slow... it is better to just have a...)
Stash (Not sure why this got on this list o.O)
Peddler... (Say WHAT now?!?!?)
I am basically a mix of cards