Boss
The Grim Thresher
Festival colossus · The Reaping
At the Reaping something comes in from the fields: a towering harvest engine of iron and bone, its threshing arms turning, taking a tithe of blood from everything it passes.
Its mechanic: The tithe
It takes no Actions: every swing costs a tithe of your Blood, a small share of what your next level needs. Its iron plates halve the damage of shop-bought weapons; weapons a smith crafted cut straight through.
Rare looks it drops
Everyone who strikes it has a chance at one piece whose look they haven't collected yet. Soulbound, and kept in the Wardrobe for good.