hehe Id have to wait for the poison damage to be added for it to be truely effective *Evil Grin*
If you really wanted to get crazy with this, casltes should have some way to defend theirselves, you could make pitch ditches, and boiling oil, and log traps, and bilistas, and siege towers, lol. Killng Pits, Caged attack dogs, shield walls, covered rams, etc etc etc
*been playing stronghold to many times*