Olive slime is a plantlike growth found in dark, damp underground areas. It is sticky, wet, and drab green in color. It clings to ceilings, floors and walls and consumes any organic matter it contacts. Olive slime can detect prey by vibration to a range of 30 feet and drops from ceilings and walls when it detects movement beneath it.
When a patch of olive slime drops and attaches to a host, it secretes a numbing poison that makes its presence go almost unnoticed (DC 20 Perception check to notice). A creature standing next to the host can easily see the slime – further away than five feet, a DC 15 Perception check is required.
An olive slime that has attached itself affects the thinking patterns of its victim, making the host’s main concern the feeding and protecting the olive slime (including keeping the creature hidden from any adventuring companions). This effect is similar to a charm monster spell (CL 6th). If a creature attempts to remove the olive slime from the host, the host either attacks that creature or attempts to flee the area. The only way to successfully break the link is to destroy the olive slime, destroy the host, or remove the olive slime from the host.
A single patch of olive slime deals 1d6 points of Constitution damage each day as it devours flesh, replacing skin and muscle tissue. Additionally, the host must double its normal food intake each day or sustain an additional 1 point of Constitution damage each day. On days the host does not eat enough food, it does not heal any damage naturally (including ability damage). When the host’s Constitution reaches 0, it dies and its body transforms into a slime zombie.
Olive slime can be burned, cut away (dealing an equal amount of damage to the host as well), or frozen. Anything that deals acid, cold, or fire damage, or a remove disease spell destroys a patch of olive slime.