Harnessing the power of lords of supernal realms doesn't come without risk. Those who do so can face such tests, whether they travel to such realms or not.
Realm Tests
1-7. Oh, the places that know you. The wayfarer loses access to all his powers and spells (not just his realm ones). He also emits an aura of the realm he follows for the next 4d6 hours. Treat as Conjure Realm (see Part I), but it follows him wherever he goes, having a range of 1d6 x 60', and its characteristics change every 1d3 hours (reroll on the realm table). Once it ends, then his powers and spells will be returned to him.