Magi Dragons are, as their name suggests, primarily magic users. They rarely use physical forms of attack. They eat anything they can kill, which is almost everything. They won’t kill unprovoked except when hunting, although they may kill humans if in danger. Their strong magic makes them one of the most feared breeds of dragons.

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.

Haggis the Magi may be named for his "father", Haggis the Fearsome, but he has done everything in his (substantive) power to distance himself from the wretch. Deep down, Haggis the Magi knows that a great deal of his power comes from the blood of his yulebuck father, but he likes to insist that his power is really because he was born from an unbroken line of Magi.

Where Haggis the Fearsome is deplorable and sucks all of the joy out of Christmas, Haggis the Magi has specialized in holiday magic. His laugh sounds of jingle bells, he can make evergreens grow instantaneously (and enjoys giving them year-round light illusions), he can conjure snow during any season, and he always manages to give other dragons exactly what they wanted for Christmas. This includes the presents he gleefully leaves on Haggis the Fearsome's doorstep, though the elder Haggis burns them out of principle.