Elvenking means in slang: 1. Thranduil of the Lord of the Rings Series; See Thranduil.
2. Italy’s folk power metal band. Amazing, powerful, and epic. It is common to mix keyboards and violins with drums, guitars and bass, which only makes it more amazing.
Three of their four albums are simply amazing: The Winter Wake and Heathenreel. Wyrd is the third.
(in Slang Dictionary, added by Logan Browning)