Fey Elves or Eladrin are Elves native to the Feywild, a realm of beauty, unpredictable emotion, and boundless magic. An Eladrin is associated with one of the four seasons and has coloration reminiscent of that season, which can also affect the Eladrins mood:
Autumn is the season of peace and goodwill when summer's harvest is shared with all.
Winter is the season of contemplation and color when the vibrant energy of the world slumbers.
Spring is the season of cheerfulness and celebration, marked by merriment as winter's sorrow passes.
Summer is the season of boldness and aggression, a time of unfettered energy.
Some Eladrin remain associated with a particular season for their entire lives, whereas other Eladrin transform, adopting characteristics of a new season. When finishing a long rest, any Eladrin can change their season. An Eladrin might choose the season that is present in the world or perhaps the season that most closely matches the Eladrins current emotional state. For example, an Eladrin might shift to autumn if filled with contentment, another Eladrin could change to winter if plunged into sorrow, still another might be bursting with joy and become an Eladrin of spring, and fury might cause an Eladrin to change to summer.