Faerie Dragon
(Refference: "Draconimicon" P.158)

The faerie dragon is a mischievous creature that often allies
with fey creatures such as pixies.
A faerie dragon’s scales are iridescent, reflecting all the
colors of the rainbow. Its butterflylike wings are a beautiful
platinum. It bears a sharp-toothed grin at all times except
when attacked in anger. It has a long, prehensile tail that
constantly flicks and twitches, particularly when the crea-
ture is happy or excited.
Faerie dragons generally keep their distance from intrud-
ers into their forest homes, preferring to lead such creatures
away rather than confront them directly. It is not uncom-
mon to encounter them near the tree of a dryad, the lake of
a nymph, or the lair of a tribe of sprites, since such creatures
get along well with one another.
Faerie dragons speak Draconic and Sylvan. They can
converse with any animal. Some also learn Common, Elven,
or Gnome.