The Wandering Horses you got in the end will be displayed in a special box on your page.
The way it works? You do what it says to do on the "card" in question on the Promo page, and each time you do it earns you points. When you get the horse you get prizes, and after 5 days you move on. You can work on several Wandering Horses at once.
The horses and their prizes and missions:
Aquila - Get the other 14 wandering horses - Prize: New SSD horse Lo
Meropam - Log In Daily - APs, M. Blood, Equus
Upupas - Use the Flash Sales or Donate To Ow (2000e daily) - Droppings, Water Of Youth, Bell Boots
Phasia - Enter Competitions - Turnips, Whip, P. Stone
Ramphila - Have your horses have their 60th birthdays - FK Horseshoes, Spurs, Titan's Challange
Balearica - Open Horns Of Plenty - Themis' Scale, A. Tears, APs
Goura - Be Congratulated - Apples, Saddle WL, Black Orchid
Lophos - Give Carrots to your horses - Energy Mashes, Lunge, Horn Of Plenty
Melopsis - Stroke Pegasuses - Caloric Mashes, Apollo's Lyre, Phillote's Privilege
Pavos - Give Birth To Unicorns - Hypnos' Blanket, Plutos' Parchment, Nyx Pack
Phonenico - Play With Your Foals - Croesus' Fortune, Equus, Artemis' Arrow
Cinnyris - Ride your horses - 100% morale for all your horses, Achilles' Heel, Pandora's Box
Epimon - Give Apples to horses you like - High End Bridle, Turnip's Privilege, Black Orchid
Momotus - Have your horses do lessons - High end saddle, Piece Of Cloud, Bonus Pack
Mystery Horse- apparently in some amount of time we will find out what this horse does.
Some of these goals are impossible for non pass buyers like me and many other players but I think the free BMIs and having what you got displayed on your page as a badge of honor are quite enough- don't you agree? :)
Happy Howrsesing as always,