Dromar, the Banisher
Legendary Creature — Dragon
Flying
Whenever Dromar deals combat damage to a player, you may pay 
. If you do, choose a color, then return all creatures of that color to their owners' hands.
Dave Dorman
Invasion (INV)
• #244Rulings
You choose the color during resolution. This means your opponent does not get to react after knowing the color you chose.
(wotc • 2004-10-04)
Rulings
You choose the color during resolution. This means your opponent does not get to react after knowing the color you chose.
(wotc • 2004-10-04)