Cheapest priced copy (Ikoria: Lair of Behemoths): $0.69 at Card Kingdom, near mint, their price list as of .
Emergent Ultimatum 
Sorcery · Rare · Ikoria: Lair of Behemoths · #185
Search your library for up to three monocolored cards with different names and exile them. An opponent chooses one of those cards. Shuffle that card into your library. You may cast the other cards without paying their mana costs. Exile Emergent Ultimatum.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.69 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ikoria: Lair of Behemoths | 185 | Rare | $0.69 | $0.99 |
| Ikoria: Lair of Behemoths | 333 | Rare | $1.79 | $2.49 |
| Ikoria: Lair of Behemoths Promos | 185p | Rare | $1.29 | $1.99 |
| Ikoria: Lair of Behemoths Promos | 185s | Rare | — | $2.49 |
| Special Guests | 105 | Mythic | $3.49 | $6.99 |
6 rulings from Wizards of the Coast
- 4 April 2025If a spell has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
- 4 April 2025If you cast a spell “without paying its mana cost,” you can’t choose to cast it for any alternative costs. You can, however, pay additional costs, such as kicker costs. If the spell has any mandatory additional costs, those must be paid to cast the spell.
- 4 April 2025A monocolored card is exactly one of white, blue, black, red, or green and no other colors. A colorless card isn’t monocolored.
- 4 April 2025If you wish to cast any exiled cards, you do so as part of the resolution of Emergent Ultimatum. You can’t wait to cast them later. Timing permissions based on a card’s type are ignored.
- 4 April 2025If you find only one card, you’ll shuffle it into your library and exile Emergent Ultimatum without casting anything.
- 4 April 2025Emergent Ultimatum is still on the stack while you cast the cards you found, so those spells could target it. However, once it’s exiled, it will no longer be a legal target.