A coeurl resembles a large cat with hairless black skin, clusters of antennae instead of ears, and two spiked prehensile tentacles growing from its shoulders. Its forelegs are longer than its hind legs.1
Rules elements should be stated in in-world terms and integrated into the body of the article.
A coeurl has blindsense out to sixty feet. It can corrode metal at a touch; also, by manipulating vibrations, it can work non-magical locks, disrupt machinery, and deal sonic damage to constructs. Coeurls are immune to sonic damage and resistant to electricity.1
- Coeurl (real-world fictional creature) on Wikipedia