Try turn undead with your cleric. If your cleric is high enough level it will destroy the blast skeletons without setting of the snowball thingy. If not they get turned and you can pick them off whenever and with whatever you want.
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JR
Damned i lost cousin Jan's techno gloves
Forest runner and first gnomish demiranger-protector with slightly rougueish tendencies and a natural dislike for Aerie