It can be worth it if you go for Gengetsu. He is the only super rare of note. Rasa is pathetic compared to even the rares in Edo treasure - he is not worthy of being a super rare. He can't even do a fraction of what Gaara can do.

Gengetsu on the other hand, is worthy of being a super rare. He does some nice single target damage and he can be used turn 1 with the right team.