On Howrse how do you buy Hestia's gift?

Hestia's Gift can only be purchased via the card packs. you must buy some cards, and then you may get a Hestia's Gift card. if you do, enter the code on the my cad page, and then go to the black market to use it. if you do not get any cards, then your cannot get Hestia's Gift (unless they choose to make it an achievement award like they did with Appolo's Lyer).