2014-11-07

The color identity of your commander is set before the game begins and doesn’t change during the game, even if your commander is in a hidden zone (such as your hand or your library) or if an effect changes your commander’s color.

2014-11-07

In formats other than Commander, Commander’s Sphere produces no mana.

2014-11-07

If your commander has no colors in its color identity, Commander’s Sphere produces no mana.