I like the Experience Marker route, would be a simple way to emphasise the impaled theme. The box the figure comes from does have cardboard markers in it to that we could use here. I believe there is some with crossed swords, some with shields (both of these match a glyph), and then some with some sort of star if I remember. For what it's worth, the star is very similar to the star on Vlad the Impaler's hat. I don't know if that star on Vlad's hat is a symbol for anything or not, but you could make a tie there.
