and he has developed a particular unusual vulnerability to wooden stakes (This is ridiculous and stupid, and larian don't seem to be aware of their ignorance).
I believe i can see where they get it from:
https://www.dndbeyond.com/monsters/17044-vampire-spawnStake to the Heart.The vampire is destroyed if a piercing weapon made of wood is driven into its heart while it is incapacitated in its resting place.
(Plot twist; Astarion is really interested in keeping the tadpole because it's been letting him feel things again, like he hasn't felt for hundreds of years, and he doesn't want to give it up... I... could see Larian attempting to run that line...)
So ... basicaly Toreador stuff from World of Darkness.

Would be cool tho.
