In a nutshell what a carapace does is it mold with your body and has these affects:
-You lose one point of constitution
-Alignment shifts to neutral (though lawful and chaotic tendancies are unaffected)
-You gain a +2 bonus to armor class
-You are immune to psionics and mental attacks
-You are immune to poisons
-You are immune to fire
-You regenerate 1HP/Round until half of max hit points. If the total hit points regenerated are more than the host's constitution a point of constitution is lost permanently.
-If the host dies and is not raised in less than a few days, the host is not raisable and the carapace produces one or two new carapaces.
This would be awesome in Baldurs Gate, although the regenerating rule is a little strict, you could change that for instance, it will only regenerate as much as your constitution in one day or something, that's better than losing all your constitution

Also the alignemnt change is bad for paladins and rangers..
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Quote:
"Est Sularis Oth Mithas"-->Honour Is My Life
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[This message has been edited by Synthos (edited 10-28-2001).]