From Blake onwards, dreams often take over the whole view, with the dreamer the only link to reality. Examples from Blake, Rossetti, Hodler and others.
Dreams painted by more modern artists, from William Blake to Paul Nash. These tend to become progressively harder to read.
Faust signs his contract with the devil in his own blood. Paintings by Ary Scheffer and others, and an engraving by Delacroix tell this story vividly.