Something seems off:
Tobi was asking Kabuto if Edo Tensei has risk, Kabuto was smirking and thinking about a certain scroll, note the black background? It denotes that its something Kabuto is thinking in his mind, like the upper panel when he was thinking about Danzo and Shisui
But the scroll he was thinking was different from the scroll used in Edo Tensei
The scroll suigetsu found has similarities in appearance and design with the scroll kabuto was thinking
Could the scroll's power be the weakness in Edo Tensei? If so, why did Kabuto not try to find it if it would be a risk to an edo tensei user like himself? Or was he the one who hid the scroll himself? But wouldn't it be safer for him to carry it along with him than leave it in a secret place? Or maybe Oro hid it and he can't find it himself? Thoughts?