Why? Because it's red!

[Charles]

The black one is a one-off, the only time you'll ever see it now is if a new server opens and a guild transfers over, takes advantage and opens the gates, and someone gets the mount.
On Khadgar where I am atm, I don't kow who got it, but on Turalyon it was a whiney little prot Warrior called Madden, used to cry when he didn't get a piece of loot he wanted.

The red one has the achievement because all the mounts drop from the AQ trash with a 15% drop rate, but the red only has 1%.

Red ones go faster!

[Casual]

Scepter questline

http://www.wowwiki.com/Black_Qiraji_Resonating_Crystal

edit: it's usually only one person per server though.

besides that one!

like to use each one

[HELPER-Ghost]

Lol, got that on my first AQ40 Run on the third or so mob, rolled 100 on it