The Ball of Tar is a passive item in The Binding of Isaac: Rebirth (TBOIR)
Effects
You leave a trail of black creep that slows enemies down if they walk on it
You also have a chance to shoot a black tear instead of a normal tear. Black Tears will slow the enemy down on hit.
Character Appearance
Character has a black, Gollum-like appearance and leaves a trail of black tar behind him:
