[@Raijinslayer]

[url=http://gatherer.wizards.com/Pages/Default.aspx]This[/url] is one of the best sites to look at when you're pondering about mtg cards, but otherwise I would suggest the following;

[url=http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=236464]Royal Assassin[/url]
[url=http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=420676]Blind Obedience[/url]
[url=http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=83471]Blackmail[/url]
[url=http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=425815]Pithing Needle[/url]
[url=http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=370457]Slaughter Pact[/url] (I chose this one mostly because it fits with your character's double-edged lifestyle.)