Resting in a small chest set on a pedestal kept in a room populated with various artifacts lay two spheres that could fit both hands. One, glowing a brilliant blue-white, as a flame. The other darker than the blackest night.
God of Strength in the Night, Hiding your Numbers, and The Silent Kill.
What if when a character died and the price to bring him back into the world was to allow an evil or good version to be placed in the world with the sole purpose of killing the character that just got its life back? The copycat character would die apon completeing his mission.....or would he?