"Black Zetsu, what is this trump card of yours you speak of?" Hearing Black Zetsu say this, Madara felt a slight surge of interest.
Black Zetsu did not beat around the bush and directly replied, "Although we failed to capture the Tailed Beasts directly, ever since that fellow Obito took over your identity and started calling himself 'Madara,' I've been operating in the shadows during that time, successfully gathering a portion of Tailed Beast Chakra."
"Since I never fully trusted that brat Obito, I never brought this Tailed Beast Chakra out into the open."
Chapter 186