Board Thread:Naruto Discussions/@comment-1018594-20160409062530/@comment-25122992-20160814160235

Actually, only the Rinnegan can summon the Statue. Madara just stated that with both Uchiha/Senju DNA Obito should be able to control the Statue, he didn't say anything about summoning it. Otherwise, Madara must've been able to summon it from the Moon long before he awakened the Rinnegan, just after he got Hashi's DNA and implanted it into his own body.