Hammerhead
Explorer
The Player's Handbook.
It's a 6th level cleric spell that wards an area against magical entry (like teleport) and against normal entry. It is permanent and covers a large area. It's even expensive, so players can't use it as well.
It's a 6th level cleric spell that wards an area against magical entry (like teleport) and against normal entry. It is permanent and covers a large area. It's even expensive, so players can't use it as well.