Alhammarret, High Arbiter
Alhammarret, High Arbiter ORI
Magic Origins Rare 
Cost: Mana 5Mana UMana U
CMC: 7
Card Type: Legendary Creature - Sphinx
Power/Toughness: 5/5
Oracle Text: Flying

As Alhammarret, High Arbiter enters the battlefield, each opponent reveals his or her hand. You choose the name of a nonland card revealed this way.

Your opponents can't cast spells with the chosen name (as long as this creature is on the battlefield).