For ten points, name this bird that lives in the Finnish underworld, the subject of a Sibelius work.
This creature is described as belonging to the "flocks of Sariola". This creature is guarded by Nasshut, a crippled and blind shepherd. This creature is described as living near a whirlpool in a coal-black river. One figure is asked to kill this creature using only one arrow. That figure, a son of (*) Lempi, is himself killed while pursuing this creature, after which he is revived using ointment from Ukko, which was delivered by a bee. This creature is represented by the English Horn in a tone poem that is part of a suite named for Lemminkainen. For ten points, name this bird that lives in the Finnish underworld, the subject of a Sibelius work.
This creature is described as belonging to the "flocks of Sariola".
{Swan} of {Tuonela}