Eccles
Ragged idiot in a trilby.
Stick subtle runes into the brickwork? Passive perception 20? (Our level 6 group has 2 people with passive higher than this, so 10-14 should be no problem).
DC 25 Arcana check and "it's some kind of preventative to teleportation. Also of reinforcement to the walls."
DC 30 gives you "It's likely to redirect anyone trying to teleport to another location. Within the castle, but you don't know where".
Frankly, as a player, (a) I'd not want to teleport past the subtle runes on the wall. (b) I wouldn't want to get dumped, on my own, somewhere at random...
A simple 'someone's beaten this idea' is fair enough. And anyone rich enough to build a castle is likely to have thought about it.
If you wanted to get carried away, add in the ritual they used to create the runes at the back of the module?
DC 25 Arcana check and "it's some kind of preventative to teleportation. Also of reinforcement to the walls."
DC 30 gives you "It's likely to redirect anyone trying to teleport to another location. Within the castle, but you don't know where".
Frankly, as a player, (a) I'd not want to teleport past the subtle runes on the wall. (b) I wouldn't want to get dumped, on my own, somewhere at random...
A simple 'someone's beaten this idea' is fair enough. And anyone rich enough to build a castle is likely to have thought about it.
If you wanted to get carried away, add in the ritual they used to create the runes at the back of the module?