For example, Cecil, Dark Knight's color identity is black and white, since its front face is black and its back face has a white color indicator
For example, if you discard a card to cast Tormenting Voice, then copy it with Reverberate, you do not need to discard and additional card for the copy, since you're not casting it
But, given the useless implementation of trading, Creatures, Inc
When things go well, a single Random Encounter can win us the game on the spot by giving us something like 30 mana value of creatures
But once you start looking at various cards in conjunction, you start to see confusion, where the game isn't quite sure what color a certain effect is
With the addition of black, this Odric clone now checks the graveyard instead of creatures on the battlefield, making it infinitely easier to put a ton of abilities