I listed several efficient ways to kill Dragons in this
thread, somewhere at the bottom.
You may want to consider them, although in the end, a dead evil dragon is a good dragon too.



I understand about the feeling lousy part, since I felt that way when I used the Cloudkill method. On the bright side, it led me to find other ways to slay dragons.
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If not a Sorcerer casting total oblivion, then a Paladin meting out justice. Otherwise, I think I will just be a bard and torture my enemies with, "My Heart Will Go On".
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Baldur's Gate Item Mart