The ornamental design for a multi-plane ceiling fan blade, as shown and described.
FIG. 1 is a top perspective view of a multi-plane ceiling fan blade, showing the new design;
FIG. 2 is a bottom perspective view;
FIG. 3 is a top view;
FIG. 4 is a bottom view;
FIG. 5 is a front view;
FIG. 6 is a back view;
FIG. 7 is a side view; and,
FIG. 8 is a side view opposite the side view of FIG. 7.
The broken line showing of portions of the ceiling fan blade is included for the purpose of illustrating environmental structure and forms no part of the claimed design.