A name shrouded in the mists of time. A scheme of pure genius. A relic of the Mage Wars.
The Blood Beast, while originally a construct, has surpassed its beginnings to assume a place of infamy.
Blood. Ah, yes. Blood. Such a wonderful tool when you know how to use it. Welcome, my friend, to the wonderful world of Blood Magic.
...The ring slid onto her finger as if it were lovingly crafted just for her. Its diamond seemed to take in the sunlight, amplify and reflect it in every direction. Then almost immediately, the light waned and the stone went dark. Her throat clutched in a constricting gurgle before she slumped to the ground, still and lifeless.
A small, primitive village has yet to discover fire, which is a good thing because there are highly flammable (but not otherwise dangerous) gasses in the air. The heroes, blissful in their ignorance, don't know that and think it a wonderful idea to show the locals open flame.