2013-01-24 : If Prime Speaker Zegana enters the battlefield at the same time as another creature you control, you won't consider that creature when determining the greatest power among creatures you control.

2013-01-24 : The number of cards you draw equals Prime Speaker Zegana's power when the last ability resolves.

2013-01-24 : The value of X is the greatest power among creatures you control as Prime Speaker Zegana enters the battlefield. If you control no creatures at that time, X will be 0.