Valentine eggs are only seen once a year. Adults’ mating seasons are very short, usually spanning a few weeks in the mid-to-late winter. These dragons were once reputed to be omens of good luck in love.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Quiet and secretive, Vinuviel possesses the uncanny ability to predict who will be someone's mate although she chooses to almost never divulge her knowledge. Yet sooner or later, she will drop hints which only the most perceptive will catch. Amazingly, Vinuviel has become quite close to Liandryl, the esoteric black dragon female, whom Ysera always thought as her most antisocial dragon. Together, these two cryptic females with their very private natures are often dubbed as the "Arcane Sisters".