sixshot can play in the EAS if he will.
2 other cases of non german player in the EAS was grubby(wc3) and zacard(wc3).
But there are 2 problems:
1. you cant participate in the EPS, unless you live in germany.
But major point is:
2.Die ESL Playercard wird zunächst nur in Deutschland, Österreich, Frankreich, der Schweiz, Polen und Italien eingeführt. In Teamligen, in denen die Playercard Pflicht ist, kann für ausländische Teammembers in Ausnahmen die Playercard (nur Trustlevel 3!) beantragt werden.
This means, that the Playercard(for trusted 3, which is necessary for EAS) is only available in Germany,Austria,France,Switzerland,Poland and Italy.
Exception is it in team leagues with players which dont is there home country mentioned above.
All what you need is a passport.