Harvest Heart in TESO.
Harvest Heart is a sigil. It is a massive series of stones. In the middle is the sigil of Molag Bal. Around the sigil you can see Daedric Script.
This is what Molag Bal uses to control the Vampires found in the Orchard. Through it flows the Black Blood. This is the medium used to influence and control the vampires in the area. Only the Elder Vampires, like Virgar the Red, are outside its influence. The rest are subject to it.
