"OK, you guys are all in a tavern. Creepy old guy in the corner tells you he'll give you a map to the true resting place of the Head of Vecna and all you have to do is just paint these little dudes. Further, during your adventures to recover the head of Vecna, you'll encounter each and every monster/person represented here by a figure and painting the figure will give you a magical bonus against them. Unpainted\badly painted figures will have a magical bonus against you."
no subject
Just run a tabletop LARP in your D&D game:
"OK, you guys are all in a tavern. Creepy old guy in the corner tells you he'll give you a map to the true resting place of the Head of Vecna and all you have to do is just paint these little dudes. Further, during your adventures to recover the head of Vecna, you'll encounter each and every monster/person represented here by a figure and painting the figure will give you a magical bonus against them. Unpainted\badly painted figures will have a magical bonus against you."
Easy-peasy
Tom