Generally, a Silence-focused deck can make use of better Silence targets, such as Arcane Watcher - a 3-mana 5/6, as opposed to Soldier of Fortune as a 4-mana 5/6.
Using this card has the upside that Silencing it is not a strict requirement on its ability to attack this is quite risky, however, since the Soldier is only slightly-better than a normal 4-drop, and giving a spell-focused deck Coins is a very bad idea. You can also use Soldier of Fortune with Silence cards like Dalaran Librarian. You can use Windfury or Windspeaker to generate multiple Coins each turn. The card can be used to Mill your opponent by giving them multiple Coins. Unlike Hoarding Dragon, it's often a good idea to play Soldier of Fortune when you're behind on the board, since you'll be able to trade it into an opponent's minion. You want to play Soldier of Fortune in a situation where your opponent needs to kill it quickly, meaning they'll only get one or no Coins. This card is similar to a Hoarding Dragon, but with a slightly different condition.
