elfin

Suggestive of an elf in strangeness and otherworldliness.

“thunderbolts quivered with elfin flares of heat lightning”

Small and delicate.

“she was an elfin creature--graceful and delicate”

“obsessed by things elfin and small”

Usually good-naturedly mischievous.

“perpetrated a practical joke with elfin delight”

Relating to or made or done by or as if by an elf.

“elfin bells”

“all the little creatures joined in the elfin dance”