Cheapest priced copy (Premium Deck Series: Graveborn): $1.49 at Card Kingdom, foil, near mint, their price list as of .
Crosis, the Purger 
Legendary Creature — Dragon · 6/6 · Rare · The List · #C17-168
Flying
Whenever Crosis deals combat damage to a player, you may pay {2}{B}. If you do, choose a color, then that player reveals their hand and discards all cards of that color.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $1.49 to $249.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2017 | 168 | Rare | $1.79 | — |
| Invasion | 242 | Rare | $4.99 | $249.99 |
| Premium Deck Series: Graveborn | 5 | Rare | — | $1.49 |
| The List | C17-168 | Rare | $1.49 | — |
One ruling from Wizards of the Coast
- 4 October 2004You choose the color during resolution. This means your opponent does not get to react after knowing the color you chose.