I have a question about Memnarch

[Sparkle Ninja]

Ok, so with {Memnarch}, is blue in it's colour identity? it has blue in its mana symbols on the card so I was just wondering

[Kaworu, the Fifth Child]

In EDH, the only format concerned with this, it does. The card will be checked for ALL mana symbols on it, not just cost, like {Lingering Souls} is black AND white, because white is on the card. In short, it's blue in EDH.

903.4.: The Commander variant uses color identity to determine what cards can be in a deck with a certain commander. The color identity of a card is the color or colors of any mana symbols in that card's mana cost or rules text, plus any colors defined by its characteristic-defining abilities (see rule 604.3) or color indicator (see rule 204).
Example: Bosh, Iron Golem is a legendary artifact creature with mana cost {8} and the ability "{3}{R}, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact's converted mana cost to target creature or player." Bosh's color identity is red.

[Sparkle Ninja]

Thanks. I needed to know that, he's going to be my commander

[imthelolrus]

Thanks. I needed to know that, he's going to be my commander

Godspeed (he's a really strong mono blue commander)