Darth Bane

Hexproof, First Strike, Deathtouch.
When Dart Bane enters the battlefield, you may search into your library for a Sith creature card and put it into the battlefield, then shuffle your library. If there are two or more Sith creatures in the battlefield already, destroy then all but one. (excluding Dart Bane)
Darth Bane has all abilities of all Sith creatures in all graveyards.