But these are *special* tadpoles, not your everyday variety...
Yup. They can communicate with each other tadpoles, and grant the host an ability to perform force mind trick, grant superhuman push and weird matrix jump.
Not to mention allowing a Vampire to walk in daylight or letting a Drow go about the surface without suffering Sunlight Sensitivity, since we don't see the one Swen made suffering any ill effects and use magic despite the curse of Corellon(prick) upon them.