Hyriel was imprisoned in the Skybound Temple, reserved only for the most intractable of demons. It once held a number of other malefactors, but they all fell to the unceasing march of time, leaving her utterly alone.
Added on September 14, 2016 to the Magnum Opus Card Pack.
Hyriel is probably combined from the element hyr and suffix -el meaning "god" in Hebrew (originally el is a Northwest Semitic word meaning "deity"), in which most angel names end. Hyr is possibly an Icelandic poetic term for "fire" or Cornish word for "long".