Formians have the ability to use fiendshards to create corruptors. Corruptors can imbue a creature with psionics by physically attaching directly to the creatures mind and adheres to the creature.

Corruptors are used by Formians to imbue their larva with psionics.

They can bond with a host creature after making a Fort save DC 10. If the host fails it dies. When the bonded creature is killed the corrupter will detach near death and try to find another host.

A corruptor can be forcibly removed from a host but it may cause the hosts death.