sonicmyst
Emperor
Big Ben. Doubles your treasury, gives you an extra economic policy slot and grants +5 gold. Considering some of the economic policy cards are quite strong, having an extra available bonus is great. Additionally, if your treasury is doubled at the right time you could have a massive amount of gold to use on unit or great people purchases as well as upgrades.
Oh, yes! I love Big Ben too! Visually and the boost to gold is so good!