The beast didnt cause me even a bit of trouble. You just get your cleric NEAR it, two spellcasters in his sight, cast Holy Might with cleric (boosts your THAC0), then Harm, cast lightning bolt (my joke, you can do without it, but for me it was more fun) on the dragon and then HIT it with harming hand of cleric. So he get LOTS of damage leaving him with pathetic 1 hp! Then a magic missile (or anything else you like) finishes him up!! He will not be able to reply because after going hostile he first casts stoneskin, then haste - that would give you plenty of time to NAIL it to the ground
