Have you ever seen something that you really don't want to go near? This. This is one of those things. Zangetsu is one of those things. He's effective, sure, but even Childermass feels the chill of revulsion at the worm the hollow spawns. He won't balk, however. That just isn't the sort of man he is.

When Zangetsu tells now, he's gone through the shadows and reappearing where the two combatants stand in the blink of an eye, moving to grab ahold of Tyki wherever the worm is not. He's angled so his shadow falls across Tyki as best as he can make it and, with Faerie magic, it's more an extension of will than needing any gestures or words, so all he really needs to do is concentrate and give Tyki a push. The shadows themselves — going opaque, pitch black — will begin creeping up to do the rest of the work for him, though until he's through for certain, well...

Breaking away at this point isn't impossible, which is why he turns to look at Zangetsu, expression drawn and pale this close to them. It's too obvious how easy it would be for him to die here, right now. He doesn't like thinking about it.

"Push him down! Into the shadow, before he can get loose!"

And try not to get caught in there, too, Zan.