"Damn" shows as outside of Dina Soul Steeper color identity?

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{"ops":[{"insert":"I'm working on a Commander deck, using Dina Soul Steeper. I wanted to include Damn as some targeted disruption, but the portal puts a giant red border on it and says that it's outside of my Commander's color identity.\nDina is Green-Black. Damn is Black.\n"}]}
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Mr_McMann avatarMr_McMann 6 days
{"ops":[{"insert":"The color identity of "},{"insert":{"card-link":"Damn"}},{"insert":" is White and Black. It has white color pips for the overload cost in the rules text box, which makes it illegal to play in a Green-Black deck\n"}]}
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{"ops":[{"insert":"Ah! Thank you for clarifying and helping me understand. Much appreciated.\n"}]}
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