Primal mount change

[Arutan]

Let's recap what they should do about primal mount music, hopefully before Stormblood:

- Add a /cmusic command to switch between the primal music on a primal mount.
- Change Nightmare's music. The generic mount music for it is so lame considering its drop rate is still lower than all ponies and 5 birds. According to the lore in the description and its appearance and name, put the Ascian's theme on it.
- Make all the primal ponies flying mount (preferably with elemental wing of their element instead of another lame method #Fenrir)
- Put "Fiend" as music of the Warring lanner (if the /cmusic is not added). Why would Sephirot's bird have the Warring Triad music and Sophia/Zurvan their own theme on the mount. SE, please use logic for once.
- Another alternative is to leave the Warring lanner as it is, make it lootable by the 3 primals of the Warring Triad, and give Sephirot his own Sephirotic lanner with his theme "Fiend".

EDIT:
- Fenrir should play The Warrens.
- The Flying Broom mount should be given it's effect it had during the Halloween event.
- The Archon Chair should play Revenge Twofold.
- The Flying Head should play Blackbosom.
- Twintania should play Thunderer.
- Midgardsormr should play Primogenitor.