<l:1,54>Mistresses<e>, <l:1,55>Assassins<e>, <l:1,56>Spies<e>, <l:1,57>Cyber Ninjas<e> and <l:1,58>Aquatoids<e> can target a city to steal an <l:6,66>advance<e> from another Civilization. A Mistress has a 40% chance of success along with a 50% chance of being caught and killed if the attempt fails. An Assassin has a 40% chance of success along with a 50% chance of being caught and killed if the attempt fails. A Spy has a 50% chance of success along with a lesser, 25% chance of being caught and killed if the attempt fails. A Cyber Ninja carries a 60% chance of success as well as a 25% chance of being caught and killed should her attempt fail. For an Aquatoid, the numbers are respectively 50% and 25%. Additionally, all those units can try to steal a specific advance, however, their chances of success decrease should they attempt this option. This action costs 1,000 <l:6,92>gold.<e>