My friends and I are experimenting with various potential Commander decks at the moment — we're drafting far more than we're playing, for a mix of practice, learning, and fun. This means it's semi-regular we'll look up a new commander for certain colours.
Searching for mono- or dual-colored commanders is fine with the colour identity search, using
ci:r t:legendary t:creature for monocolored red commanders, or the same legendary creature filter with
ci:wum for white/blue commanders.
However, every search for three-coloured commanders and above also includes every two-colour commander that could be found therein. A search for Temur commanders with
ci:gurm turns up all the green-blue-red commanders, but it also turns up all green-red, green-blue, and red-blue commanders, meaning I have to mentally sift those out each time I want to explore commander options. The exclusive (
!) filter of
ci!gurm has no noticeable difference.
How can I perform an exclusive color identity match for commanders of three colours or more, in order to get a commander who has those exact colours, without also getting commanders that match only a subset of those colours?