A promotional card given out at Gateway 2012 (Strategicon Conventions) by Antoine Bauza. Esteban is Antoine's baby son. The card was also available at Essen 2012.
Like all other 7 Wonders Promos this card can be ordered directly from the publisher Repos Production (see BGG forum).
The effect allows the player to use Esteban's ability once per game to force all players to pick a card from the same hand again and play it as normal.