But what if the orcs were smart enough to see this coming and cast Hallow with Extradimensional Interference?
Sneak in, Wind Walk out.But what if the orcs were smart enough to see this coming and cast Hallow with Extradimensional Interference?
That just adds another round to cast a high powered dispell magic as Hallow prevents you from teleporting out, not in. Forbiddance would work.
Keep in mind you have Very powerful spells at that level. You could cast Antipathy (Orcs) on your robe.
You'd have to get there first. Easy enough to do I suppose.
But whether or not you could dispel a Hallow without targeting the point of origin is another debate (we haven't allowed it, but I can see it being a DM's call).
Forbiddance would also work of course. I had recently used Hallowed in a temple with a similar situation - by using Hallow I could exclude people who weren't followers of the BBEG without use of a password which could always be stolen. They also had a simple test - a teleportation circle to get to the inner sanctum the PCs will have to figure a way around.
Unless there was a ruling about it Hallow only affects creatures once they are inside. So teleporting in would be possible.
Keep in mind you have Very powerful spells at that level. You could cast Antipathy (Orcs) on your robe.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.