“ Somewhere along the line, someone very powerful lost their marbles. Literally. Possessing a marble allows incredible clarity of thought about a particular related subject.”
“ Whilst exploring underground the PCs discover tube like tunnels stretching for miles, upon further inspection the strange tunnels seem to connect all major cities in the are, what is their purpose?”
“ Appearing a small ballista bolt, this bolt' is actually an arrow used by a god from a long-dead pantheon. Some sages theorize it was a weapon crafted by Loki to slay the world tree. Why it was never used escapes them however.
The spear has a divine-level anti-plant effect. When driven into the soil point first, an ever widening circle of destruction radiates out from the point, killing any plant material. Perfect for holding a kingdom's food supply for ransom. Any who bear this device are cursed so any plant-based materials they touch crumbles to ash.”