[He barely has his balance recovered from flailing around with the ink, and the lapsed concentration when the floor crumbles away leaves him unable to summon a levitation spell. Down he goes, roaring with rage through the floor.]
[And the floor beneath that. And the one beneath that. Finally the floor only creaks as he lands, his momentum slowed enough to keep him there.]
[The dust settles around his prone form. He doesn't move.]