problem is is:
How long do they stay dominated?
You have to redominate them a bunch of times over time.
And, if you miss one and they save and:
A) escape and/or
B) kill you
that would be a bad thing.
So, sure, increase the paranoia of the vampire lord.
OTHO, all vampire lairs should have pipes and holes that allow a gaseous form vamp to escape, uh, move through.
And her resting place should be just her size, with a couple hundred feet of solid rock away, with a windy tunnel to get to it that's just gaseous form sized.
The weight of the returning vamp triggers a seal so it can't be followed by a gaseous form and it's to small to teleport/dimension door to, too.
And there are multiple ways out, as well as minions at more easily accessed areas to kill first.
an example:
Hero's kill vamp, chase gaseous form to stone sarcophagus, but vamp has passed through stone sarcaphagus to hidden area beyond, leaving heroes to open up the sealed area to fight a battle ready (spelled up?) monster/undead awaiting them.
Or maybe a just a big explosive/trap.
"Get it open, fast. If he lays there an hour, she can come back after us."
(stone shape)
Boom.
Vamps are fun.
How long do they stay dominated?
You have to redominate them a bunch of times over time.
And, if you miss one and they save and:
A) escape and/or
B) kill you
that would be a bad thing.
So, sure, increase the paranoia of the vampire lord.
OTHO, all vampire lairs should have pipes and holes that allow a gaseous form vamp to escape, uh, move through.
And her resting place should be just her size, with a couple hundred feet of solid rock away, with a windy tunnel to get to it that's just gaseous form sized.
The weight of the returning vamp triggers a seal so it can't be followed by a gaseous form and it's to small to teleport/dimension door to, too.
And there are multiple ways out, as well as minions at more easily accessed areas to kill first.
an example:
Hero's kill vamp, chase gaseous form to stone sarcophagus, but vamp has passed through stone sarcaphagus to hidden area beyond, leaving heroes to open up the sealed area to fight a battle ready (spelled up?) monster/undead awaiting them.
Or maybe a just a big explosive/trap.
"Get it open, fast. If he lays there an hour, she can come back after us."
(stone shape)
Boom.
Vamps are fun.