WizWrm said:We should collapse all the passages into the cave, then cast forbiddance or hallow with dimensional anchor tied to it; and screen across the whole area. That gives us a very unexpected, safe base, though we'd have to work some way for us to get in and out; maybe we could leave a corner open to teleportation or something.
Fieari said:I'm not adding anyone else until this battle is settled (just waiting on a post from evil making sure they haven't thought of any other rules exploits for their advantage...). After that, evil has another army ready as well, so you'll go right on in.

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