Greater Seal of Sanctuary

Greater Seal of Sanctuary

9th-level abjuration (ritual)

Casting Time: 10 minutes
Range: Touch
Components: V, S, M (incense and special inks worth 500 gp, which the spell consumes)
Duration: 24 hours

You inscribe an angelic seal on the ground, floor, or other solid component of a structure. The seal creates a spherical, spiritual boundary with a radius of 100 feet. For the duration, aberrations, elementals, fey, fiends, and undead who approach within 5 feet of the boundary know they are about to cross a deadly barrier. If the creature comes into contact with the boundary, it must make a Charisma saving throw. On a failure, it takes 15d8 radiant damage, it’s repelled to 5 feet outside the boundary, and it can’t target anything on the opposite side of the boundary with attacks, spells, or abilities. If the creature is a fiend that isn’t on its home plane, it is immediately destroyed instead of taking damage. On a successful save, the creature takes half as much radiant damage and can cross the boundary.

While within 100 feet of the seal (inside the boundary), aberrations, elementals, fey, fiends, and undead have disadvantage on ability checks, attack rolls, and saving throws, and each takes 4d8 radiant damage at the start of its turn. All of these effects apply to the specified creatures trying to cross the boundary by any means, including teleportation and extradimensional travel.

Creatures other than aberrations, elementals, fey, fiends, and undead can’t be charmed or frightened while within 100 feet of the seal.

The seal has 75 hit points, has resistance to bludgeoning, piercing, and slashing damage, and is immune to psychic and poison damage. If the seal is reduced to 0 hit points, the spell ends.

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