Zetsu nodded in agreement with Konan as he looked up at the monstrous insect; somehow, he could tell in his gut that any attempt to communicate would go unanswered. This was not a summon, or a natural beast--there would be no point, he highly doubted that it would listen to him. Rather than immediately reaching for his own weapons, he simply began to form hand seals; after all, he seemed destined to play a supporting role, even and especially in this guise. With that thought in mind, he completed the jutsu.

The ground trembled again, though this time not because of the sin-beast; huge, thick vines tore themselves from the ground, all studded with wickedly sharp thorns about as long as a standard kunai. They burst out in a roughly parallel line surrounding the centipede, and immediately moved, snakelike, to wrap themselves around the beast and plunge their thorns in deep so he could sap away its energy even as it was restrained from attacking them. Let Konan and Sephiroth do the work and get the glory; he would help make it easier and more possible. But in the meantime, he could at least help make sure they got hurt as little as possible; he felt in his own weapon pouch, drawing out a pair of explosive-tagged kunai, and flung them with expert aim; with luck, each would bury themselves in one of the monster's huge eyes and explode, blinding it.