my current game where I can use Astarion, but he can roll a nat 1 on any of the many traps in your average room. He hasn't blown up yet
Well, Astarion blowing hmself up is no major loss.
To avoid those pesky natural 1's I recommend Gloves of Theivery sold by your Local Friedly Zhentarian Shoppe or Cat's Grace cast by the Team Cleric.
