[[Spanish release date::| ]][[Spanish Sneak Peek date::| ]] [[English release date::| ]] The Weekly Shonen Jump Alpha April 2012 membership promotional card is a "Number 16: Shock Master" promotional card, given as a subscription bonus with the Weekly Shonen Jump Alpha magazine. Attendees at Yu-Gi-Oh! Championship Series Indianapolis 2012 could collect this card or the July 2012 membership promotional card, "Slifer the Sky Dragon", early by subscribing or renewing a subscription at the event.