Cheapest priced copy (Magic Origins): $0.59 at Card Kingdom, near mint, their price list as of .
Alhammarret, High Arbiter 
Legendary Creature — Sphinx · 5/5 · Rare · Magic Origins · #43
Flying
As Alhammarret enters, each opponent reveals their 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).
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.59 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic Origins | 43 | Rare | $0.59 | $1.49Out of stock |
| Magic Origins Promos | 43 | Rare | — | $0.79 |
| Magic Origins Promos | 43s | Rare | — | $1.49 |
5 rulings from Wizards of the Coast
- 22 June 2015You choose one card name, not one name per opponent.
- 22 June 2015Alhammarret's second ability happens as Alhammarret enters the battlefield. No one can cast spells or activate abilities between the time a card is named and the time that Alhammarret's last ability starts to work.
- 22 June 2015Although spells with the chosen name can't be cast, permanent cards with that name can still be put onto the battlefield by a spell or ability.
- 22 June 2015If your opponents have no nonland cards in their hands, you can't choose a card name. Alhammarret's last ability won't stop any spells from being cast in that case.
- 22 June 2015Your opponents can still cast a card with the chosen name face down if it has a morph ability. A card with the chosen name can also be manifested.