Cheapest priced copy (Shards of Alara): $1.79 at Card Kingdom, near mint, their price list as of .
Brilliant Ultimatum 
Sorcery · Rare · Shards of Alara · #159
Exile the top five cards of your library. An opponent separates those cards into two piles. You may play lands and cast spells from one of those piles. If you cast a spell this way, you cast it without paying its mana cost.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $1.79 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shards of Alara | 159 | Rare | $1.79 | $7.99 |
6 rulings from Wizards of the Coast
- 1 October 2008The cards are exiled face up.
- 1 October 2008The cards in the pile that wasn’t chosen remain exiled. Likewise, any cards in the chosen pile that you can’t play or you choose not to play remain exiled.
- 1 October 2008If you cast a card “without paying its mana cost,” you can’t pay any alternative costs. You can pay additional costs, such as conspire costs and kicker costs.
- 1 October 2008You can play a land card from the chosen pile only if it’s your turn (which it probably is, since Brilliant Ultimatum is a sorcery) and you haven’t yet played a land this turn. That means that if there are two lands in the chosen pile, you’ll be able to play a maximum of one of them.
- 1 October 2008You play cards from the chosen pile as part of the resolution of Brilliant Ultimatum. You may play them in any order. Timing restrictions based on the card’s type (such as creature or sorcery) are ignored. Other play restrictions are not (such as “Cast [this card] only during combat”). You play all of the cards you like, putting land onto the battlefield and spells on the stack, then Brilliant Ultimatum finishes resolving and is put into your graveyard. The spells you cast this way will then resolve as normal, one at a time, in the opposite order that they were put on the stack.
- 1 October 2008One of the piles may have zero cards in it if the opponent wishes.