The ornamental design for communication card set, as shown and described.
FIG. 1 is a front view of a communication card set. showing my new design;
FIG. 2 is a top perspective view thereof;
FIG. 3 is a front view of a single communication card from the communication card set shown separately for clarity of illustration.
FIG. 4 is a rear view thereof showing a translated phrase in broken line;
FIG. 5 is a front view of another a communication card shown separately for clarity of illustration showing a different phrase in broken line; and,
FIG. 6 is a rear view thereof showing a translated phrase in broken line.
The broken line indicia is included for the purpose of illustrating portions of the communication card set that form no part of the claimed design. The cards of the communication card set are flat.