Cheapest priced copy (The List): $5.49 at Card Kingdom, near mint, their price list as of .
Dromar, the Banisher 
Legendary Creature — Dragon · 6/6 · Rare · Invasion · #244
Flying
Whenever Dromar deals combat damage to a player, you may pay {2}{U}. If you do, choose a color, then return all creatures of that color to their owners' hands.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $5.49 to $199.99 at Card Kingdom
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.