The ability makes you discard an evil card from hand or battle for every evil color you have in play.
Say I have 2 colors in play. If I only have 1 evil card (a negate) in my hand and my 1 evil character in battle. Do I have to discard both of my cards, or can I negate it? If I choose to discard my character, can I play my negate since I would have intitive because of removal?