need help making indexed random materials?

sorry if this is in the wrong spot wasn’t sure where else to put this.

working in the material editor

basically i have 29 materials i want to plug into the emissive property and have it randomly use some but not all, not just one at a time. i’ve done material blend but only ever with 2 materials and no idea on making it randomly select a handful. any help appreciated thanks! :slight_smile: