Night Reign: Revelations
A rip in the planar barrier between the prime and the demiplane of Nightmare, the Nightmare Vortex is a terrible obstacle in encounter. The demiplane of Nightmare draws creatures to it either by force of its necrotic energies or by influencing the dreams of its victims.
The portal actives when triggered. Thereafter, it attacks every round on its initiative.
♦ DC 24: The character recognizes the danger of the portal.
Secondary Attack: +14 vs. Fortitude
Hit: Ongoing 5 psychic and necrotic damage and the target is blinded (save ends both).
Miss: Half damage.
♦ To close the portal requires an Arcana or Religion check as a standard action vs. DC 28. The skill challenge is Complexity 2.