Cheapest priced copy (The List): $0.49 at Card Kingdom, near mint, their price list as of .
Sudden Demise 
Sorcery · Rare · The List · #E01-59
Choose a color. Sudden Demise deals X damage to each creature of the chosen color.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 124 | Rare | $0.69 | — |
| Archenemy: Nicol Bolas | 59 | Rare | $0.99 | — |
| The List | E01-59 | Rare | $0.49 | — |
2 rulings from Wizards of the Coast
- 17 October 2013Sudden Demise will deal damage to a multicolored creature if one of its colors is the chosen color.
- 17 October 2013You choose the value for X as you cast Sudden Demise. You don’t choose the color until it resolves.