Board Thread:Theories and Speculation/@comment-5407586-20150624095943/@comment-3279282-20150703150120

Then why did he make the sign again if he already made it once to move the clone?

Deidara isn't known for lying, on the contrary. He's a bigmouth. And of course would Omoi know about the strongest attack of his enemy. This is war and they get intel about who they're fighting.