When General Grievous damages one of your opponent's Jedi, and that Jedi is discarded, put 2 mastery counters on Grievous's Lair. If you have at least X mastery counters on Grievous's Lair , where X equals the number listed below, General Grievous also gets: 2: +10 speed, +1 power and +1 health, 4: Elude and Overkill