I’ve learned so much about the cardiovascular system lately. First it turns out that oxygen is hauled around by tiny men on motorbikes, and now buttloaf_builds reveals where blood comes from – the Bloodsmith! This Bio-Cup entry makes extra eerie use of minifigure crowbars as spindly fingers on his four hands. And the golden tubing gives just the right pop of color without distracting from the deadly red and black. This is definitely a science lesson that’s gonna keep me up at night.