Shop › Mastodon - Leviathan (2LP Sky Blue) (New / Sealed) Mastodon - Leviathan (2LP Sky Blue) (New / Sealed) $32.00 sold out New / Sealed Limited Sky Blue 2LP with etched Side D, gatefold jacket. Received from Alliance Entertainment. Sold Out Added! New / Sealed Limited Sky Blue 2LP with etched Side D, gatefold jacket. Received from Alliance Entertainment.