This essay analyzes three ephemeral artworks by sculptor Beverly Buchanan that were created with the knowledge that they would disappear or be destroyed. I link the formal qualities of these artworks with the absented presence of blackness in modernity, whose violent exclusion enables the coherence of the normative social order. Psychoanalysis has inherited a sense of the Subject from within this social order and, as such, its unconscious and symbolic coordinates are haunted by anti/blackness. This essay engages Lacan’s understanding of the artist’s privileged relation to the unconscious to posit that blackness is an essential medium that reveals the socially and historically specific psychoanalytic unconscious to itself. I bring the blackened forms of Buchanan’s sculpture to bear on clinical and structural analysis to illuminate the unmarked place of blackness and pose questions toward a psychoanalysis that is open to the destruction of a World founded on black nonbeing.