Blossoming Ancient

The Blossoming Ancient was born from a seed of one of the Ancients. These spirited saplings are destined to regrow and heal Azeroth from the devastation caused by the Shattering. Adopt one, and you’ll be rewarded with joy throughout the year - as each new season begins, the Blossoming Ancient changes, bringing new life to its surroundings.

Source
This item is available from the shop or the In-Game Store for $10 or €10. It was released on June 14, 2013.

Pet Journal
This budding ancient is a unique variety in Azeroth, created from the ever-living branches of the Great Tree, and can bloom in any season.

In-game shop
Grow your collection with the life-giving Blossoming Ancient.

Blizzard Shop
''Born from a seed from one of the Ancients, these spirited saplings are destined to regrow and heal Azeroth from the devastation caused by the Shattering. Adopt one, and you’ll be rewarded with joy throughout the year – as each new season begins, the Blossoming Ancient changes, bringing new life to its surroundings.''
 * A pet for all seasons

Letter
Players are mailed this pet by Malfurion Stormrage: