One of many, many variations of the Medieval Knights Code Of Chivalry. No one region, kingdom or country had a unified code, although they did share various aspects between them. The "Rule" of the Knights Templar had 76 parts. Where the one in this image has 17, and I have seen some with as few as seven.
a dravener: a type of demon that can cause death just by looking at someone/creature. They have the ability of mind control, and can make someone go completely mad. They can shapeshift into a crow/raven. And are known for there rituals which involve human sacrifice/murder. The rituals helps them gain more powerful. This creature is on the hunting list.