Prophet, Uncommon 3/3/3
Alliance. Far sight.
Production x #rare cards in hand.
For its cost, this card would be worth taking just for its two keywords without any card effect.
The card effect, which is itself DOUBLED by triggering the keyword (which you would always do) strikes me as so profitable that I wouldn't know where to start in order to balance it. Maybe just nix the Alliance keyword or make it #Rare/2.
Edit: Looking at it again, it occurs to me that it wouldn't be worth playing for the keywords alone in the event that there are 0 Rares in hand since it would have the Alliance keyword doubling zero. Maybe this card isn't as powerful as I first thought. Alliance or not, you'd need two Rares for it to give any benefit aside from the Far sight tag. Yeah, this might not be so bad after all.