When the next challenge begins, the story of the legendary horses will be told. The first legendary horse is Altaïr. An author will write the story of the legendary horses, and every time the community has gathered enough horseshoes, a new chapter will be opened. You can fulfill three objectives every day. Objective 1 = two horseshoes, 2= 4 horseshoes and three = 6 horseshoes. Objective three may be solvable with a video. For three objectives solved, the player gains a puzzle piece. You can also go back and solve the objectives you didn't solve the day before.There is legendary tack to be won, and once you have a full set (5, legendary saddle, bridle, saddle cloth, polo wraps and bonnet) you can give them to one of your own horses and trandform it into the legendary horse. The skills the horse has will then double. you'll also get one piece of the legendary star. Legendary horses can not participate in the Grand Prix anymore(!!).

Altair

Amira

Zaldia

Bucephalus

and

Tormenta

a small promo, water balloon fight where UFOs become water baloon with gifts you can throw at your friends (see an UFO, click it, it reveals a brown saddle, throw it at one of your friends and then both of you will have that brown saddle, for example)
The numbers here are likely to be different, in similar promos, they used to differ from server to server.

Altair is a legendary horse.

It is obtained when you hook-up one of your horses with the equipment legendary Altair 5 or when buying a pack of Altair

Some days he can drink twice When drunk for the second time of the day , it offers 24-hour VIP. If you are already VIP , your subscription is extended by 24 hours.

When Altair is obtained through the pack Altair , ll accept usually drink two times a day.

Party: 24h VIP if he drinks 2 times the same day

VIP: automatic management of the distribution of tasks
This mare can not be sold

When the festivities open you can get Altair equipments

In the raffle jackpot
With the Golden Fleece

That sounds like a good perk. What does automatic management of the distribution of tasks supposed to mean?

Adding on to the part where legendary horses can't participate in the grand prix anymore. On the INT server someone said this:

As soon as you put one piece of legendary tack on your horse, it can't be sold anymore. If it is a stallion, coverings offered will be lost. Grand Prix entry will be lost. Morpheus Arms, Nyx Pack items, reproduction and customization items will be lost. A mare in gestation will lose the foal. Once all five legendary tack items are applied to the horse, it will gain a Philosophers Stone.

24hrs of VIP? Heck yes I'm aiming for that divine. I take it there's got to be some sort of catch though, surely this can't be as easy as it sounds. (Complete objectives, get puzzle pieces, win tack, get divine). Are the objectives hard or something, or have I interprutted this wrong?
I love their design's though.

By reading the INTL spoiler zone, looks like Altair's equipment can be won via the Lottery or Golden Fleece. Knew there'd be a catch. I still don't quite understand how that works though, if it's all or just one piece of tack per Fleece you win on. So what's the point of the puzzle pieces?

Secret Rainbow is one of the Horses of the Rainbow

Every 1st of the month at update time, it offers a 5th Element provided its owner connected the day before.

By bringing together the 7 horses of the rainbow, you can obtain Secret Rainbow

Game: 1 5th element offered on the 1st of the Month

VIP: Able to cultivate up to 10 fields at a time.

This horse can be sold