I used to dig EToS so much in my melo-death phase.
Sigur Rós - Góðan Daginn.
Not into celtic, paganistic metal much but these guys ****ing made me feel like i was in a movie theater. Might like em Skaldy
skip to 1:55 if you wanna skip the epic intro.
Amon Amorth - Death In Fire
The Seven Mile Journey - Identity Journals.