Transform cards and color identity in EDH

[Offler]

For example

Civilized Scholar // Homicidal Brute

Blue scholar turns into red brute. Can be this card played with monoblue or monored general?

[Malchar]

www.mtgcommander.com is in charge of the rules, and they haven't updated it yet. They probably will by the time of the prerelease. There is a lot of debate in the forums, but right now it looks like the cards will probably be counted as being all the colors on either side.

[TsumiBand]

I think the new Garruk makes itself pretty plain; one side of the card is Green, the other side is Green/Black. I can't play Manamorphose with Kaalia, I don't see why one should be able to play New Garruk without also playing Black. It's like putting Fire//Ice in your deck and saying, "Oh, but, I'll only cast Ice, don't worry about it."

[Malchar]

The new comprehensive rules update seems to indicate that the color identity of a card is the combination of colors on both sides of that card. This means that a monogreen commander cannot use Garruk Relentless.

903.4
This rule, defining color identity in Commander games, was reworked a bit to clarify that every card has a color identity, not just the commander.

903.4c
This new rule states that the back face of a double-faced card is considered when determining a card's color identity.

903.5c
This rule was rewritten to make the color identity limitations of a Commander deck clearer, especially given the rewording of 903.4.

[cdr]

Yep, they went with it being the color(s) of both sides.

[HdH_Cthulhu]

This means you can always Pyro/Hydroblast Civilized Scholar // Homicidal Brute
...interesting!

[cdr]

This means you can always Pyro/Hydroblast Civilized Scholar // Homicidal Brute
...interesting!

Not if it's Red/Blue. Color identity is not the same as color.