The Dmg / Chunks are not guranteed, but if you line it up and throw it in the left armpit area like me you have a good chance of doing alot of dmg.
also 4 Piece Grasp + Moirai was is running and Tablet Artifact
its for some reason that left armpit area where he takes a lot of dmg from Tangles. its also kinda random. but lining up like me gives the highest chance for good dmg/ Chunks.