Prime Speaker Zegana
Gatecrash — mythic
Legendary Creature — Merfolk Wizard
Prime Speaker Zegana rulings:
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.
2013-01-24: The number of cards you draw equals Prime Speaker Zegana's power when the last ability resolves.
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.