Altair is a legendary horse.
You can obtain him when you give the 5 pieces of Altair's legendary tack to one of your horses, or when you purchase an Altair pack.
On certain days, he can drink twice. When he drinks for the second time on a given day, he gives you 24 hours of VIP membership. If you are already a VIP, your membership is extended by 24 hours.
When Altair is obtained via the Altair pack (available in Europe), the probability that he drinks twice on any given day is higher.
Game: 24 hours of VIP membership if he drinks twice on the same day.
VIP: Automated mission breakdown management
This horse cannot be sold.
Discover Altair's story at http://www.howrse.com/legendaires/histoire/altair