Was the Clayface passage, was the Clayface scene, in Grant Morrison's "Arkham Asylum", was this Clayface scene Poison Ivy's dream where Poison Ivy dreamed she was Clayface, Clayface - 3.. (this was the Clayface who was known as Clayface 3.. their in pre-crisis days was a Clayface 1 and a Clayface 2) ...

... Poison ivy dreamed herself as Clayface - 3 and this dream is portrayed in "Arkham Asylum" by Grant Morrison, with Poison Ivy dreaming herself as Clayface 3 wandering the hallways Arkham Asylum barely able to stand, wandering naked the hallways of Arkham Asylum, feeling her skin sick and seeping, the poison in her skin finally overwhelming her, coming to the surface of her subcutaneous skin surface layer and seeping out in green, bronze coloured sickness, so her flesh was sick and seeping.. and "Batman.. only you can help me"... this is Poison Ivy's dream of her future... within the walls the hallways of Arkham Asylum...

"Arkham Asylum" is by Grant Morrison and Dave Mckean...